Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b7e82fb10e9a8d3…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 21:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc680055d83275fe9bee2e71e48297f1 SHA-1: e2b58a27ad8af6a9d9a56dd7658ee187f1b3dd3d SHA-256: 3b7e82fb10e9a8d39e2b83c01e82639af8b9663d7cbc1a90a658dd079d817fcb
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a known malicious redirector, likely intended to lead users to further malicious content or phishing sites. The presence of numerous external links, many pointing to Shopify domains, suggests a tactic to obscure the ultimate destination or to create a large, potentially deceptive, link farm.

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=chiwoniso+maraire+ancient+voices+album In PDF document text
    • http://supiwon.the-nature-atelier.com/uploads/1/3/2/6/132682974/takotobabi.pdfIn PDF document text
    • http://kemafutiv.crrhcc.com/uploads/1/3/1/3/131379874/lapaxo.pdfIn PDF document text
    • http://files.refacemasters.com/uploads/1/3/1/3/131383323/kunadeka-xesil-fokap.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/1/0431/9684/2142/files/76133982935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/tozosedugepajuramebinata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4015/8374/files/bpmn_2._0_thomas_allweyer_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/workplace_first_aid_guide_poster_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92313200312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/62673656383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1161/0520/files/jolly_phonics_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/xukexokosezafop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0898/9096/files/vujuso.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_off000064bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BD 5236 bytes
SHA-256: ed682360a5feef4973cd9109d99d32a67a21020d63a0a042813d866585afcb7c
font_01_sfnt_off0000766b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766B 10144 bytes
SHA-256: d75ae045e9067662483d30383cfdd3676c5ec089a64f9a91f02a0f0e3f40e3bd

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