Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f1c8349f676f87e…

MALICIOUS

PDF

52.5 KB Created: 2020-08-25 02:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da2de5e2244ae65e804eee922fb841be SHA-1: 94cc1c742986dd329cf57474641bcd5e5852246e SHA-256: 8f1c8349f676f87eee6f98969d728300888d033e64a7fb70e92a5fc8c2994fa5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links redirects to a known malicious redirector at ttraff.cc. This indicates a phishing or malicious redirection attempt. The ML classifier strongly supports the malicious verdict.

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=guidelines+for+antibiotic+use+in+dentistry In PDF document text
    • http://files.laureenkodani.com/uploads/1/3/0/7/130740524/gikaxegutozoxifujali.pdfIn PDF document text
    • http://files.jordanlutheran.org/uploads/1/3/1/3/131382113/8664884.pdfIn PDF document text
    • http://semezeg.breakingthroughmovie.com/uploads/1/3/0/8/130873851/winom-wepetusoboba-dojofi.pdfIn PDF document text
    • http://pajus.tessevansauthor.com/uploads/1/3/1/0/131071164/mupawebuwiku_botajopuv_rojipawezog_vavirurep.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/1/0438/0088/7457/files/parozafejirotakabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6840/files/microscopic_anatomy_of_skeletal_muscle_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/kilewibasinotovirizebobaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/1345489887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7791/7090/files/home_carer_tax_credit_form_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/5114401683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/reading_and_writing_skills_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/23681450692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/13391002980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/78183251032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8747/0485/files/rejusorexizadaxutit.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 1

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_off00008ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBB 5288 bytes
SHA-256: b367a4879136e0757f3327c814c95a72c8a27b7206bb921ae8a5d2dcd52cc410
font_01_sfnt_off0000a0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C5 10388 bytes
SHA-256: 6b4b40b251ed003ea61a77a98636fa2b83a793e1e2d238df3df268801b22fd8f

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