Malicious PDF — malware analysis report

Static analysis result for SHA-256 6511d55110df7f63…

MALICIOUS

PDF

47.2 KB Created: 2020-08-23 19:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a95b41430cfae5517a312552248ebb9 SHA-1: d54b0071a7beb5d439b99845fbf5562cb686fe4b SHA-256: 6511d55110df7f63d60915e232ec70fe7ecaa1b840696f5ea28d11f34e38e091
202 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, https://ttraff.ru/pify?keyword=acidosis+lactica+por+metformina, which is part of a link farm designed to distribute malicious content. The document body, though obfuscated, contains text related to medical conditions and includes the same malicious URL, suggesting a phishing or scam lure. The presence of numerous links to external PDFs, many hosted on Shopify, further indicates a link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=acidosis+lactica+por+metformina In PDF document text
    • http://files.savajrsvolleyball.com/uploads/1/3/1/3/131380627/ridilevawupap.pdfIn PDF document text
    • http://files.seejaysrepairs.com/uploads/1/3/1/3/131384401/sejetururef_zuxod.pdfIn PDF document text
    • http://files.canisteowesleyanchurch.com/uploads/1/3/0/9/130968984/0bf7b4.pdfIn PDF document text
    • http://xobizuz.kiarashmotarjemi.com/uploads/1/3/1/8/131855997/wifaruvat.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
    • https://cdn.shopify.com/s/files/1/0431/3785/9733/files/69144095237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0082/2934/files/92244924980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/bodylastics_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6482/files/zejufeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4397/1484/files/jboss_application_server_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/basabizaxugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1615/files/automatic_control_engineering_francis_h_raven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/19382303833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7486/9665/files/ancient_greek_grammar_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/sisito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/64640010054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/nokej.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
🗂 Part of campaign: seejaysrepairs.com 5 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 5076 bytes
SHA-256: c681bde543079a550ca5a985aa37b0c437920b189c0535bdceeb43e44d330b1c
font_01_sfnt_off00007f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F18 10140 bytes
SHA-256: 42c96fd44e1d5e3586bdff4a0270b0ce741d7362eb1d19ee03ae5185e055cbea
font_02_sfnt_off0000a1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333