Malicious PDF — malware analysis report

Static analysis result for SHA-256 3604426f1e9e7d38…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 06:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4549a7f70f9ab37cdedb8c121a33d61 SHA-1: 6753373c57c67e29bc340d585110e69b618a7947 SHA-256: 3604426f1e9e7d382a90b21dd16a4b3961f6d08c98f88d965e2c6436d2a6aaa9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=physiotherapy+for+brachial+plexus+injury+pdf', leads to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external files, suggesting a broader distribution or SEO poisoning tactic. No scripts were extracted, but the primary intent appears to be directing users to malicious infrastructure.

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.cc/pify?keyword=physiotherapy+for+brachial+plexus+injury+pdf In PDF document text
    • http://files.graphite-art.com/uploads/1/3/1/4/131437330/juseraxawuwik_pimelatufozekup_sanowexifimupa.pdfIn PDF document text
    • http://files.ecojoshua.org/uploads/1/3/1/0/131070611/zamoxi_detekun.pdfIn PDF document text
    • http://files.lavenderlanemi.com/uploads/1/3/2/6/132696263/302973682aa.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/1/0431/2137/7434/files/suwibepizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/14181248258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8080/9625/files/second_anglo_boer_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/potamevanikogibogemukos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8307/6518/files/tony_robbins_unlimited_power.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4049/6033/files/bsc_nursing_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/66855719220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/xavodo.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_off000085c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C2 5628 bytes
SHA-256: daa65ebaff299c99f65990d9aa785cafba0311bb4cea7eb34858618bf2d08df6
font_01_sfnt_off000098e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98E0 10816 bytes
SHA-256: 6293f1b6d1fb21883be17f9dc99c06e00c4b64d74489e027e7bc08bd14ee92a9

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