Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2671e30108d0204…

MALICIOUS

PDF

44.8 KB Created: 2020-08-06 08:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b5ce14282ab3d52c22fc45420840d0b SHA-1: 9683c992165f3eba61905078112682d2409305d2 SHA-256: e2671e30108d0204be93d624b7a230a1d7289acedc3bb80b34c1e035c3977b90
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign, designed to lure users to malicious sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=embryo+development+in+plants+pdf.

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=embryo+development+in+plants+pdf In PDF document text
    • http://files.realwalks.com/uploads/1/3/1/4/131453522/cbab6482.pdfIn PDF document text
    • http://files.fourstatesymphonicwinds.org/uploads/1/3/1/4/131437249/divozes.pdfIn PDF document text
    • http://files.davidwilliamsguitarist.com/uploads/1/3/1/4/131437285/98a8cab9eeb1.pdfIn PDF document text
    • http://files.quillviolet.com/uploads/1/3/0/8/130873983/7389692.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/1/0431/0063/5290/files/14429062506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/nojoruwefuduko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/general_chemistry_4th_edition_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/60076779273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/61261492145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/98395398684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/duwekezimizuritetebufixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/62578354847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7211/1260/files/pozafexokosirogosenid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1235/6253/files/lijupiresedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54954124591.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 6

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_off000071c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C0 5444 bytes
SHA-256: 6147ffc8fdda1f806606091b378b6c43d9f8897e99af37df9678ccd18839e286
font_01_sfnt_off00008436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8436 10008 bytes
SHA-256: 1da7656c7df51e9db52c29688cb6e24b75d3f5f68e96ffe181ec6148e5482e32

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