Malicious PDF — malware analysis report

Static analysis result for SHA-256 826bef652045dbd0…

MALICIOUS

PDF

37.8 KB Created: 2020-08-22 12:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df1cfa130ea3f461f48df8a2a1d93ee6 SHA-1: 54d6c89cb932deaba5918cb5b0e0e01b0df84666 SHA-256: 826bef652045dbd0b92607f89955434b281246b70c31e50d23e7c2a5bf73d0a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=bernina+700d+overlocker+user+manual'. This redirector is likely used to obscure the final destination and distribute malware or conduct phishing. The document body, though heavily obfuscated, contains the same redirector URL and several benign-looking Shopify links, suggesting a link farm or SEO manipulation tactic to increase visibility. The ML classifier strongly flagged this PDF as malicious.

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=bernina+700d+overlocker+user+manual In PDF document text
    • http://files.cam-efi.com/uploads/1/3/1/8/131856160/rolowavenonizawifulu.pdfIn PDF document text
    • http://files.keyadigital.com/uploads/1/3/1/3/131379111/wirupejav.pdfIn PDF document text
    • http://lepeporo.urbanedenbeauty.co.uk/uploads/1/3/1/4/131413418/5711969.pdfIn PDF document text
    • http://vidunesu.joelmiddleton.com/uploads/1/3/1/4/131438563/zenunusopojumevir.pdfIn PDF document text
    • http://radize.designauthentic.com/uploads/1/3/1/6/131636612/9ae4548b9.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/1/0428/9835/8432/files/41718344304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/23749920150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/83234844424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/jifaparunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8418/files/top_self_help_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/78998119742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/t_fal_actifry_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3412/3157/files/35535650233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6665/files/oba_rowland_lifestyle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/94878212840.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 8

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_off000055c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C8 5480 bytes
SHA-256: d0ad374afb6a05f7ec33244967c577fe4b277b165336b918d3d04bbc120cbb14
font_01_sfnt_off00006859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6859 9976 bytes
SHA-256: 68f3c32476f42e9d93e6e1eb0529e578935eeed47dd0f2dc9408a60be29d20c9

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