Malicious PDF — malware analysis report

Static analysis result for SHA-256 864851ab154c45fe…

MALICIOUS

PDF

37.1 KB Created: 2020-08-08 08:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a74839bba4a2dd2a01855b3fc408c39 SHA-1: c853d60902c8de269b2f204043c5f0d9743e3ec4 SHA-256: 864851ab154c45fef9be8e18b55e34a95b3518246ff0bf00c9239b91404288c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used to lure users into downloading potentially malicious content. The document body also contains the same malicious redirector URL, reinforcing the phishing attempt.

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=nlt+parallel+study+bible+pdf In PDF document text
    • http://files.basscampmalta.com/uploads/1/3/1/4/131438405/fosug.pdfIn PDF document text
    • http://files.flatsfishingonline.com/uploads/1/3/1/8/131872021/dejodod-dijaxunizekuk-bolofiwabixasen.pdfIn PDF document text
    • http://files.northmetroweekday.com/uploads/1/3/1/0/131070579/1aea67.pdfIn PDF document text
    • http://files.annascafebar.co.uk/uploads/1/3/1/4/131406947/dametopujanoparoko.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/1/0433/2349/0457/files/bafopazafanonovego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/oxidative_stress_biomarkers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7554/files/jedasapovon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/2099615017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/18710290444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/tudizebikupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/60176878713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/fiwotuwobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7421/5331/files/buwopazugez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/notalate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/81227919247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/sun_beam_grill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/92639944355.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_off000050fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50FB 5244 bytes
SHA-256: dd1313c71846822b15847cb1d93d848c31007c17baa5136551b56ac7aa2fe9ac
font_01_sfnt_off000062e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 10224 bytes
SHA-256: 2730141b5244359d121a81270eb46e88b622e0166c461a8d1c5e9a75559d7dff

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