Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d880634f8888f4a…

MALICIOUS

PDF

83.2 KB Created: 2021-09-13 17:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 529347616ba40f5e3ac3ef129d5c7de3 SHA-1: 0da909208c2eeb80ea3a2f281628358f508ff2fd SHA-256: 5d880634f8888f4aed821921a100dad44ae5e98c6f45918cced45f81b14a51ec
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dabanbep.tanglehadong.com/upload/files/56791963426.pdf In PDF document text
    • http://nuovartea.eu/userfiles/files/99457253516.pdfIn PDF document text
    • http://kietminhrivet.com/upload/files/mixegi.pdfIn PDF document text
    • https://oglethorpeclub.org/~oglethor/UserFiles/file/dafumogesopibulolitedip.pdfIn PDF document text
    • http://sonarkella.com/userfiles/file/82678365271.pdfIn PDF document text
    • https://aayams.com/userfiles/file/14399816257.pdfIn PDF document text
    • http://gardatrans.com/content/Files/52179010456.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/rilizaleropurulemoguwamob.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ee9f0d991a---lolarebodasawow.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/psqbb5tpcm94cju7coh9u4g5g1/51879222575.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16136b9083def5---70985902141.pdfIn PDF document text
    • http://citranco.com/users/files/tevumudapapekazamurefomuz.pdfIn PDF document text
    • http://brianhaymore.com/images/e/file/sedepupiforoniwalukuxexi.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/1349313859.pdfIn PDF document text
    • http://www.dgtrans.co.th/login/ckfinder/userfiles/files/minenajemuzeno.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/8512119770.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/mp9sjno6s7sp9ccv6ph9rem5je/nedaxilakep.pdfIn PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80086384439.pdfIn PDF document text
    • https://yocarbroker.com/upload/ckfinder/files/kuzimebebemasejafipodenij.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/6783986197.pdfIn PDF document text
    • http://ozdermusavirlik.net/userfiles/file/pamabimodesarojaruruvidol.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/71545627189.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/mufosidibomo.pdfIn PDF document text
    • http://myucpb.com/userfiles/file/lidirabozefonigowutekut.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/nugipalurawamefina.pdfIn PDF document text
    • http://tzsunup.com/upload/86879487705.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/dewopomurenijenumijarizub.pdfIn PDF document text
    • http://vodnik48.ru/content/file/ruvebu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=android+auf+virtueller+maschinePDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 19580 bytes
SHA-256: 8cc4baf4c89da992f4d84ad8892eb09b6ec042c4f560358e2fbc036039a5e7d0
font_02_sfnt_off0001260f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260F 10888 bytes
SHA-256: d90a091dae9cfb46494d0e9512afdcabf126d151e853db152768ed7fe57a65c4