Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0a30508a56296f…

MALICIOUS

PDF

129.1 KB Created: 2020-08-05 01:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 402602489b15636420c0eca9fcf64531 SHA-1: e590b6a093fbad2c99b57354900e203f2c5dde29 SHA-256: 6a0a30508a56296f01581cc68b9c441b8d02c4e1999ec8e74fc7832286e91526
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is part of a link farm or SEO poisoning campaign designed to trick users into downloading malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.ru/pify?keyword=tratado+de+direito+penal+1+cesar+roberto+bitencourt+pdf In PDF document text
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdfIn PDF document text
    • http://files.blwcenter.org/uploads/1/3/0/7/130740323/8794972.pdfIn PDF document text
    • http://ximobugo.ccis.ccsdtitle1.org/uploads/1/3/1/4/131407227/sonepejokoxekelese.pdfIn PDF document text
    • http://files.publishedbywestview.com/uploads/1/3/1/4/131453665/rilokoxofezomo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/jedozeletovotoxujogur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/vocabulary_for_ielts_general_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/456684938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/jufirediwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/18951731492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0995/0367/files/80999618546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8548/6498/files/38769484000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6629/3401/files/surevukarufuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/pimebivegusuxipoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/20835465290.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19781 5292 bytes
SHA-256: 0c3bb3743a3f512b91db20b365c3e3fdadd4d36efc2776d9adca525ea671a3fd
font_01_sfnt_off0001a987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A987 19784 bytes
SHA-256: 31068b2bad4d3ba85b89b6eb481ba32c872b9aa2f01659ff04bcc57d2ac0d8f8
font_02_sfnt_off0001e0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0FD 16160 bytes
SHA-256: 1a543d9e2c81fda3913d50c0d54720f796d7f68d6d3139d1637af9699209b7db

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