Malicious PDF — malware analysis report

Static analysis result for SHA-256 be81a2a1c61ab863…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 09:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d88c473e4c203e8834bdef07af99715 SHA-1: 2113fd6cbcdadc4b89b7989c0ed6c6a23a0022df SHA-256: be81a2a1c61ab863a8496cf6c2f2f8a0be00eb6be3d3b82cbea1b1b8db0dbb70
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.com'. This suggests the document is designed to funnel users through a series of redirects, likely to a malicious site or for SEO-based traffic generation, rather than providing legitimate content.

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.com/pify?keyword=opposite+of+always+pdf+free In PDF document text
    • http://files.lynnkirkham.net/uploads/1/3/0/8/130874318/6548217.pdfIn PDF document text
    • http://files.farmersunion.coop/uploads/1/3/1/6/131606546/2316712.pdfIn PDF document text
    • http://files.phelpsoutdoors.com/uploads/1/3/1/4/131408415/nuvedezawova.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/1/0429/9508/9571/files/boxing_drills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/notelobonitapotitametu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8696/files/mugavoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/zegifad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9054/1733/files/mukezafovuvimebuzusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/fijodamobuwunafowuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/xemuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vinujavezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/zenenipebosapezepum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5836/3544/files/83624123210.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_off00006114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 5256 bytes
SHA-256: c421c7d7336495c363fa94bdb1ed6706a54f0ed510e4954b5ff82999fbc09adf
font_01_sfnt_off0000730f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 10564 bytes
SHA-256: edf0728003f4772442065f0551201d2ec10dd746dedb6c7b3c1482a7d185278d

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