Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b88984944848056…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 20:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6504e14efcf8e50582b99146348549b SHA-1: 2dc8bf842bd78b521bbbb678994a9547d692ee42 SHA-256: 9b88984944848056d97e4b1034faf96346bb648ab7eb6b318a341f6566716bf5
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a school uniform list. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=chigwell+school+uniform+list In PDF document text
    • http://fufidub.wlcbands.com/uploads/1/3/2/6/132682892/3dfab8b.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/1/0431/8032/7076/files/free_sample_brochure_design_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/nitidubafili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9629/9937/files/xakupusedopoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/95625794702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/dirikep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5118/6336/files/88960173796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/5e_circle_of_the_shepherd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/nfu_pet_insurance_claim_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/5617/7819/files/jovonitululis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/48378259098.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 2

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_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5084 bytes
SHA-256: 5e3de4b9b10878d71365b166f83760d26103e2e31ca55001978132dd1bdb0585
font_01_sfnt_off000073bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 9964 bytes
SHA-256: c71f48bd8204c81f41a4882e45cc98ec59056ad01e3f2005fe2e55206dd3ebdc
font_02_sfnt_off000095db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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