Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de6adcebcf3a3e5…

MALICIOUS

PDF

75.4 KB Created: 2021-06-13 21:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 79777be4f4f1a6fda575120f2cd34825 SHA-1: 53958e522be0b89e7a906e68da8395ce936aba0f SHA-256: 6de6adcebcf3a3e53d0f71e90849064771df59baf4d8357e2321fef241a7b571
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting an attempt to distribute further malicious content or redirect users to phishing sites. The presence of a URL with the query parameter 'utm_term=windows+10+free+product+key+64+bit' strongly indicates a social engineering tactic to entice users with the promise of free software keys.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://medvor.ru/uplcv?utm_term=windows+10+free+product+key+64+bit PDF link annotation
    • https://hasekei.jp/userfiles/file/figamafukinin.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6caaa6898f---genesutuwodegawipoxa.pdfIn PDF document text
    • http://landbondcorten.com/attachment/file/8df4ca1d2d9cbb8292c1e2775fcc2b77.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/79391067058.pdfIn PDF document text
    • https://faltprasten12.se/anvandarbilder/70/files/11326413424.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a12d5d710ad---dazajukonewozuwokolufugug.pdfIn PDF document text
    • http://geose.ru/userfiles/file/wozedoji.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcac5ba95d---470814595.pdfIn PDF document text
    • http://goref.ru/files/file/rodifufesenubixaseju.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/9v9pibaj1a0rev37lpa1nhqjj0/9782268156.pdfIn PDF document text
    • https://schmitz.cz/res/file/68957157209.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b4521b17712---diwunewaxag.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/d2a26bf1da1084aba255ea555842e652/93272087496.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b742bd1b4f3---fulowewilunus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA30 5636 bytes
SHA-256: c540853332f687eb9628d95af851c20699f046baa63ef1c4bd5f932036135be5
font_01_sfnt_off0000ed95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED95 10820 bytes
SHA-256: 30912b826b5588aa85f3cdeefc2b676d16a23dfc76ad394e396acc125d4ccc0b
font_02_sfnt_off0001129a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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