Malicious PDF — malware analysis report

Static analysis result for SHA-256 280e2b9e78f68d82…

MALICIOUS

PDF

34.9 KB Created: 2020-08-20 21:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1cc4faf6542f9679017dbdf99804cc2 SHA-1: 29b9f73355b02f0d35039ce84e8f0b126dbddc41 SHA-256: 280e2b9e78f68d8282f9541ca5c9eea1d68ba00c4ed4b5823c9c363da2df1f8a
202 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to deliver further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, some hosted on Shopify. The presence of urgency lures in the document body further supports the malicious intent of directing users to potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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=codashop+free+fire In PDF document text
    • http://files.paulnoordhof.com/uploads/1/3/2/7/132712315/6455214.pdfIn PDF document text
    • http://vujawibe.literaturehouse910.com/uploads/1/3/2/3/132302720/8465376.pdfIn PDF document text
    • http://files.twwrealestate.com/uploads/1/3/0/9/130969837/edc82cb.pdfIn PDF document text
    • http://likip.wainfleetskating.ca/uploads/1/3/1/4/131453133/1b45a64f.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/1/0431/1125/2132/files/45697649112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4868/0089/files/fedizoxiwumater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/niwoponegasidutiwiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/boxipir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/encclica_centesimus_annus_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/kolefibiwizomeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/nidujozelukuvazuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/38215968401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/biotechnology_class_12_notes.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 4

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_off00004bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB6 5004 bytes
SHA-256: 374d3b2d6f7726fd2e8c61757d5b84fb49c1ae37f3796694b5ba9b5eeab55cff
font_01_sfnt_off00005cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 10080 bytes
SHA-256: d090803c663754038496dd741f68a1e2010461187fe450100e06d674158fdee8

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