Malicious PDF — malware analysis report

Static analysis result for SHA-256 8755d50d7eb98e20…

MALICIOUS

PDF

77.4 KB Created: 2022-03-15 07:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 417eef1d1cd226e07c160786050b3189 SHA-1: 52a071f46cfd52713bf4eb91909d6ba250fb7d87 SHA-256: 8755d50d7eb98e204a7bf2edc33c975db0707cd04c4e7d6f1e7a1778e49503f7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9845

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://podar.co.za/XSRYdR1H?utm_term=atom+vpn+firestick PDF link annotation
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16200f53def76c---gamagidodivo.pdfIn PDF document text
    • http://koreabulk.net/userData/board/file/97245118640.pdfIn PDF document text
    • http://cowmoo.org/ckfinder/userfiles/files/tuluf.pdfIn PDF document text
    • http://doxetrilinh.com/media/ftp/file/36236379109.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/b819ca758c19603d235c925b33ce3b64/xugorovebilenu.pdfIn PDF document text
    • http://energywork.pl/userfiles/file/83365732729.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/dikinufetapokawirelerub.pdfIn PDF document text
    • https://portoggitter.no/content/files/userfiles/file///25382915252.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/5b6a92b74c24baf2a8b8b0f1410d3558/76796336407.pdfIn PDF document text
    • https://technopacific.cl/jamila/admin/uploads/file/64950875709.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/ccbeafe11c335271a1e36b99e9754e5b/dagezukufitigizawubopapij.pdfIn PDF document text
    • http://cloudinfo01.smartevolve.com/images/ckeditor/files/wexajetujug.pdfIn PDF document text
    • http://www.plavanikojencupraha.cz/upload/files/sujedagegerufofogisot.pdfIn PDF document text
    • https://bukkosdiskola.hu/files/file/legarudoxe.pdfIn PDF document text
    • http://yztools.com/images/upload/File/1212344557.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620890dbb193c---48042257007.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/26255091462.pdfIn PDF document text
    • http://telefoonindex.nl/images/uploads/87177391993.pdfIn PDF document text
    • https://pepsima.biz/files/file/61097427728.pdfIn PDF document text
    • https://www.anep.it/ckeditor/kcfinder/upload/files/luwutosunamezilarurusotul.pdfIn PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/wosirujamurukikivuze.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/162192ae6f0e52---68898599118.pdfIn PDF document text
    • http://www.rxeyewearonline.com/pics/80885628121.pdfIn PDF document text
    • http://kimsanghun.com/upload/userfiles/file/2022251136116281.pdfIn PDF document text
    • https://mintedimages.com/ckfinder/userfiles/files/64684849072.pdfIn PDF document text
    • https://5974293.pasarantogel.com/contents/files/89423651141.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/wutozofikepirajowenolowok.pdfIn PDF document text
    • https://supportsurgical.com.br/assets/kcfinder/upload/files/vafebolovodarunatutoj.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ebf1ad44e7---55835799734.pdfIn PDF document text
    • http://polins.org/public/userfiles/file/buxijukexiwajokoxidebu.pdfIn PDF document text
    • https://lifo-sea.com/ckfinder/userfiles/files/keravefisafobezadagad.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16218d01402a07---76090972535.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/95223969205.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1622f0e6e58090---retamiluki.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/93171587130.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/kijumafi.pdfIn PDF document text
    • https://abcspain.tansis.com/userfiles/file/69645156006.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c965.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c965.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC965 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0000e085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE085 10572 bytes
SHA-256: 0bd40f8e21e6cc0be3480167f5ea40650ca68b953bdcac2b2f0d2747f12de086
font_02_sfnt_off0000f8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 17616 bytes
SHA-256: 4007dfc11e7a99e7e8fc552169192dd85fa6ac5fcda130bc7babfc7b07087f72