Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5c4ab3a82ac492…

MALICIOUS

PDF

32.3 KB Created: 2020-08-01 06:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d57964008b7c4ed75d2552739d7d5cf9 SHA-1: 2e6508429738359a15df093adccc36ac5a162211 SHA-256: 2f5c4ab3a82ac492bca5754ffab1c6b8811ed1b9027b0f50f04e765eadc916a4
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 hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=mal+song+download'. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack pattern involves luring users through a deceptive link structure.

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=mal+song+download In PDF document text
    • http://files.spacecoastal-anon.org/uploads/1/3/1/8/131871622/409564.pdfIn PDF document text
    • http://files.david-jones-society.org/uploads/1/3/0/8/130814642/dixagululekivex_tekixomixe.pdfIn PDF document text
    • http://files.damioncera.com/uploads/1/3/0/7/130776755/401752.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/1/0438/9571/8040/files/juriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/jiwopotomani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/nafodawajof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/47836464341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/50702268423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/19818674713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7313/5011/files/zokapopax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/gizerefumepog.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_off00004261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4261 4996 bytes
SHA-256: 5c9868fc5e448ba633f7f1af2af7e0a2508c36107e7f1e104d54b1564edefbcb
font_01_sfnt_off0000538d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538D 9884 bytes
SHA-256: 218d1c3596ec44b83e232dcc6a9007924045db4301caffe716c66ca42e270bfd

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