Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ecab78a3d96022…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 05:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ba21fa0136ccca6c8940cad2c33bbe3 SHA-1: 108ca9f60631d46c448880f9b106608305867b64 SHA-256: 29ecab78a3d960221f86ca0103fa9a2d1793fa7a5cca9dc81eb6ae8c10dcbdea
194 Risk Score

Malware Insights

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

The PDF contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.ru/pify?keyword=metformin+er+half+life'. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the malicious URL and several other PDF links, reinforcing the lure. The primary intent appears to be redirecting the user to a malicious site.

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=metformin+er+half+life In PDF document text
    • http://files.greenkayla.com/uploads/1/3/0/7/130776204/miratemuw_kinojezinex_sipirefakas.pdfIn PDF document text
    • http://files.heathrose.net/uploads/1/3/1/1/131164185/lipag-mavurat.pdfIn PDF document text
    • http://dunufor.pandgdolls.net/uploads/1/3/0/7/130739415/ccc5a9.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/1/0430/2100/9053/files/63938071204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/8621750284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/ansys_apdl_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/frequency_adverbs_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2742/9536/files/45237754259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/dream_interpretation_john_paul_jackson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/ishakamusa_barashango.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5415/2342/files/46636168574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3846/4405/files/artillery_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/vebazaveditebam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/6298126065.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 2

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_off00005d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D84 4836 bytes
SHA-256: 5f6251c69c93522985f076df056cb71d970670f3feb9e0fe4abeb57d8623096c
font_01_sfnt_off00006dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 10196 bytes
SHA-256: 4f62504aaa9b267ea0d83dd69cf55288ddde9a065623f3e624b5fa6987ad016c

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