Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ec15d29e83f31e…

MALICIOUS

PDF

46.9 KB Created: 2020-08-24 19:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 636655210c88e2a2df4b9e1cea82f556 SHA-1: 65b92a2515d5b0d916d4259111e5d110680ae6b5 SHA-256: f5ec15d29e83f31e5e32a06f31d69c2d0faaa7bb3ae5b4514e2679fe7ff150bb
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=types+of+parasitic+diseases+pdf'. This indicates the document's primary purpose is to lure the user to click on this link. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.cc/pify?keyword=types+of+parasitic+diseases+pdf In PDF document text
    • http://files.ewan-macintyre.org/uploads/1/3/1/8/131856331/zevalulitepixu.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/1/0433/6173/0718/files/kafutigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/48270817045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/41468774534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/armando_alducin_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/48224680845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/73665960373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7615/7607/files/googly_film_hd_video_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/rinibirexiterifejabodoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/puvagetevupefipukagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1891/7787/files/space_3d_wallpaper.pdfIn PDF document text
    • https://medlineplus.gov/parasiticdiseases.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0F 4848 bytes
SHA-256: 4555b79ff9b28ee7d053a589a3d22747a5769922c5d8a07e7ff1ec75acc6714e
font_01_sfnt_off00007dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAB 10328 bytes
SHA-256: 8523708a8f20134a03833c0c3dabc583000a8ba2cc539a077a18f834ed8c0341
font_02_sfnt_off0000a0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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