Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b3454e789d99f5…

MALICIOUS

PDF

289.9 KB Created: 2022-03-19 23:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: b948290aef1948a9dcecfeec3d85fe05 SHA-1: ff919b8138050f80a5b3d810d398f35b237a5832 SHA-256: a8b3454e789d99f53c43a3897721171b4d90db7dd7574c95be16f2bd8ceb7465
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7754

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=childish+gambino+v.+3005 PDF link annotation
    • http://www.guidanceias.com/assets/files/plugins/kcfinder/upload/files/15394575460.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620ac5c4b06b7---fawugala.pdfIn PDF document text
    • http://zenpersonnel.com/UserFiles/file/tixalome.pdfIn PDF document text
    • https://unitytradecapital.com/ckfinder/userfiles/files/kukomofoguzumanadakeda.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/32122472396.pdfIn PDF document text
    • http://tottazo.com/userfiles/file/fivajosatusububa.pdfIn PDF document text
    • https://skl.deindrukdemo.nl/upload/files/lakel.pdfIn PDF document text
    • http://ncfc.com.tr/ckfinder/userfiles/files/nefedoxuletibox.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/37619103705.pdfIn PDF document text
    • http://anilogue.com/upload/file/zilagar.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/5f59aea5b12ca1f10dc692d06bf5f2fc/sazugodawupenonola.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/sujuvezupigavetinajeliwub.pdfIn PDF document text
    • https://www.nysc.lk/dmin/include/ckeditor/kcfinder/upload/files/liredofopupun.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/witaburosudoj.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/xirimod.pdfIn PDF document text
    • http://alkord.kz/app/webroot/js/kcfinder/upload/files/lebetip.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a07d0d9c1684b51f549498af0103eea/66170941924.pdfIn PDF document text
    • http://ciudadaniadesdeelaula.com/kcfinder/upload/files/romixuwamusipakuw.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/bepisaxar.pdfIn PDF document text
    • https://beyondmywalls.com/data/files/rudako.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/55713790837.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/16229759075.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/rafaxamukev.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/82143322892.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/jn6h0v42dn23546o6qvbbvqrlk/bidom.pdfIn PDF document text
    • https://gullyracing.it/admin/ckfinder/userfiles/files/3325455056.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_off0004149e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004149e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004149e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4149E 11096 bytes
SHA-256: 3be441bac80fc5e2ec51eace4adee13d26e9daca50adff406f2da534d63ecf87
font_01_sfnt_off00042e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42E0E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00044529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44529 19756 bytes
SHA-256: 40336475fe8e1b96e4d2c1ef693eee7af8ed9a7f767a3f312c6394f049667a4b