Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2a5bb8b35b6e20…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 20:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d503adbffbb005c3e1dd0c69d9fc5b3 SHA-1: 555cce2f1e5b43edae55290d9b0331fb3975b1de SHA-256: 0c2a5bb8b35b6e209ad12fde70e711bed0b599666a4ee346f15e74c1815da89b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=carbanions+and+their+reactions+pdf'. This redirector likely leads to a phishing or malware download site, disguised as a free PDF resource. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent to drive traffic to potentially harmful 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=carbanions+and+their+reactions+pdf In PDF document text
    • http://files.andrewanddeannafriesen.org/uploads/1/3/0/8/130813612/0740b2.pdfIn PDF document text
    • http://files.erinkschmidt.com/uploads/1/3/1/4/131407164/1133648.pdfIn PDF document text
    • http://files.jenniferconstanceleeart.com/uploads/1/3/1/0/131070105/e73286e84.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/1/0437/1087/3765/files/7504166442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0301/0468/files/fomijizorabuvixila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3342/6082/files/hunger_games_chapter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/49772070617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/slow_ride_bass_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/43846150610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/34672301811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/ripada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/88180118107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2979/7787/files/jobejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0922/files/wudapapeluredav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/26558621979.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 7

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_off000060c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C0 5256 bytes
SHA-256: a8d613eb39450498f0aac4944cc61963c34534da549e58c0fbceeecca5f17b5e
font_01_sfnt_off0000728f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728F 10652 bytes
SHA-256: cffab26cd51686735605c5ad9bddc27b0d0490d4222c0299347e845c05e76a63

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