Malicious PDF — malware analysis report

Static analysis result for SHA-256 8104b7c509faa334…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 22:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afe908b7d97a44913a73f7c57e38f9b6 SHA-1: 947e2cbb45375443cb48300ee9057e47bb914403 SHA-256: 8104b7c509faa334c6735ea6bb5fca6268b07b9e03c159715dc5e31ac119963d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple Shopify-hosted PDFs, all routed through a malicious redirector at ttraff.ru. This indicates a phishing or scam attempt, likely to distribute further malware or lead users to malicious sites. The ML classifier strongly supports the malicious verdict.

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=geankoplis+4th+edition+pdf In PDF document text
    • http://files.shopthenoun.com/uploads/1/3/1/3/131381910/cbfb3.pdfIn PDF document text
    • http://files.brownswoodnursery.com/uploads/1/3/0/7/130739375/bipakujifezo_mujelokifufor_xugumeg_xaburidexexu.pdfIn PDF document text
    • http://files.jessicaleighwellbeing.com/uploads/1/3/1/4/131406275/a1368e4f6cf718.pdfIn PDF document text
    • http://files.divimar.com/uploads/1/3/1/6/131606331/zawojimivugo.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/1/0428/8125/3535/files/4083598414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/75641013219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/zawuzuzobemixugojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8095/7598/files/lumifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/dagagazubafopinasisosiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/90902475279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/suzog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/99355491368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/towegape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/36423735841.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6065 5004 bytes
SHA-256: 928c0a03d3e8199329de9d324cade6481c0c2ae977c633408e98aaf931ea2cc1
font_01_sfnt_off00007172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 10296 bytes
SHA-256: 1cf384b56aeb895ed75fe69254e96881f288efc51a9c859c91ff08c5b2350a5b
font_02_sfnt_off00009492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9492 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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