Malicious PDF — malware analysis report

Static analysis result for SHA-256 3702e8c2f35805a7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-04 00:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c0b0fe42be39bd83118fcccfa1dfc2d SHA-1: 886506fbc1b0a413e455fd66650b277762e34c78 SHA-256: 3702e8c2f35805a7f12a094c13f0e78855786920bec30d9bbf42373907a6ded3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'ttraff.ru', which is known malicious infrastructure. The document body, though partially corrupted, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=psychological+testing+and+assessment+cohen+9th+edition+pdf In PDF document text
    • http://files.balloonsworldonline.com/uploads/1/3/1/8/131856186/gejetaw.pdfIn PDF document text
    • http://files.cantsitstill.net/uploads/1/3/0/7/130776888/wasam-vanod-gemena-velozaluvopiwa.pdfIn PDF document text
    • http://files.achievewithaimee.com/uploads/1/3/1/6/131606127/fc69d.pdfIn PDF document text
    • http://files.coffee-a-roma.com/uploads/1/3/1/1/131164112/beputet.pdfIn PDF document text
    • http://files.portugal-spainmarinesurveys.com/uploads/1/3/0/7/130776327/ceb020bc7.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/1/0433/3273/1030/files/bomimelobaderexudajid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/sosuwokobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0053/4952/files/dilexaxumujonas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/82622328009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/30499923266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/xenilogapepuwodonogop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7440/files/83382218207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/astronomy_physics_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3201/9097/files/23681527115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1114/4861/files/mawobokitux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/jedibunojube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/26433778995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/63540693544.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B5F 5520 bytes
SHA-256: c444d502f8d98ac49a6cfaedf828b422c72a8f2ca74b0bf4602d4ff45917e700
font_01_sfnt_off00005df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF7 9644 bytes
SHA-256: 87c9c143c43bac606f8a2dc89eff5cc596c5a8201c6e44a520ed8d14156c8da6
font_02_sfnt_off00007eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3