Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31b80515db7b02c…

MALICIOUS

PDF

54.1 KB Created: 2020-08-15 02:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3fb54141309cca57ded0419fd24e22d0 SHA-1: f7dc015860d556190aaa4ddef5fef93fd97fe161 SHA-256: c31b80515db7b02cbad3a7d7088d6f9e7c4369cd912bf7e704df79a86b35a750
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=td+corrig%25C3%25A9+d%2527+atomistique+pdf, indicating a likely phishing or scam attempt. The presence of a link farm further supports this, suggesting an effort to distribute malicious content or traffic. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=td+corrig%25C3%25A9+d%2527+atomistique+pdf In PDF document text
    • http://rojuve.usgrandmasters.com/uploads/1/3/1/4/131408899/texomudoza-fugemiwo-zivojasuzukot.pdfIn PDF document text
    • http://files.calvinmasculpts.com/uploads/1/3/2/7/132712206/lodezifogotofet-lajaziwakupivob-jeravenur.pdfIn PDF document text
    • http://files.imperialgrp.com/uploads/1/3/1/6/131606072/degojefodemimug.pdfIn PDF document text
    • http://sokijolej.abatelakechapter.com/uploads/1/3/2/6/132695569/2b948aaf781876.pdfIn PDF document text
    • http://files.mariannezarzana.com/uploads/1/3/1/4/131482821/b2aeea9f7.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/1/0430/8906/8185/files/79892718500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51439980706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5921/4501/files/sword_art_online_progressive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1242/7674/files/calendario_laboral_2020_ccoo_madrid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65431134640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/19725149350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/45140784684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6133/8531/files/characteristics_of_a_charismatic_leader.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6E 5696 bytes
SHA-256: f86c94a95510fb76044acf908795459bd899dc7c758caa57fe420272332e0797
font_01_sfnt_off0000a26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26F 12404 bytes
SHA-256: d70793064d9eb0bebde7f41b74a9042fcb45668b66eea35f3fbe51a39f803d9b

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