Malicious PDF — malware analysis report

Static analysis result for SHA-256 12bd8b2bb4b20efb…

MALICIOUS

PDF

42.3 KB Created: 2020-08-03 18:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 954a526a3948eeb85cc43197875d1216 SHA-1: f797e4d65b67ae68007895be0fcf5319a0fa616a SHA-256: 12bd8b2bb4b20efba375de7a4308e494ed13a0a23fdc17c1a7fd15247ef0d60b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly indicated maliciousness.

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=adverbios+de+frequencia+em+ingles+pdf In PDF document text
    • http://files.socalvetsupport.org/uploads/1/3/0/8/130874652/simapunomaped_rudenevamamin.pdfIn PDF document text
    • http://files.thegrangeguesthouse.net/uploads/1/3/1/3/131383456/bosowox-pukirujarod-bikap.pdfIn PDF document text
    • http://kokapoz.alpineadultdaycare.com/uploads/1/3/1/4/131437246/sagonaxubawi.pdfIn PDF document text
    • http://files.dictionaerie.com/uploads/1/3/1/4/131453194/4389752.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/1/0436/4389/5958/files/4576382913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/14700395247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9130/4343/files/top_github_users.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/87314562451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/11193365209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/wejozowavemil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/65495342104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/1936042882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/38311030543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/26144928610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/32273354774.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 5

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_off00006529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6529 5788 bytes
SHA-256: c05576113ddb6a75cc9cce4421abdfd685ce8227618012864bf28caf03ac17e6
font_01_sfnt_off000078ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 10456 bytes
SHA-256: cded77480f19cfea4e127aec6c034159b8064914a45a7228bf85211188026b03

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