Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c53ff2b967febd…

MALICIOUS

PDF

36.7 KB Created: 2020-09-16 21:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03b38b15938bfe4ce1287209439f75bc SHA-1: a9b92c0936aa9ded3094f515170d042e037db708 SHA-256: b6c53ff2b967febd1ec2fd378a7a75e544639704e99e106c9903b727af072871
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to a chainsaw and a URL that appears to be a lure. The primary attack pattern involves redirecting users to malicious sites via these links, likely for phishing or to download further malware. 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.me/wix?keyword=poulan+pro+42cc+chainsaw+fuel+line+diagram In PDF document text
    • http://files.pathhomewa.com/uploads/1/3/0/7/130775245/3806079.pdfIn PDF document text
    • http://xomewopi.southernappalachianworkcenter.org/uploads/1/3/0/7/130775169/0b80f8.pdfIn PDF document text
    • http://lonevixik.rachelsweetdesign.com/uploads/1/3/1/4/131452824/felabaj-wigufata-buzojogi-paradutejake.pdfIn PDF document text
    • http://kisisapej.maryrawsonphd.com/uploads/1/3/1/6/131606289/475536.pdfIn PDF document text
    • http://files.myhealthandwellnessmatters.net/uploads/1/3/2/3/132302816/76746856b42.pdfIn PDF document text
    • http://files.belireentertainment.com/uploads/1/3/0/7/130775635/387b3ab6ca2.pdfIn PDF document text
    • http://files.gcamp.org/uploads/1/3/2/8/132815123/050c9cfb2.pdfIn PDF document text
    • http://jipuwa.aera100.net/uploads/1/3/1/8/131856158/3061050.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/1/0432/6916/1110/files/jefaketar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/59765451704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/trucos_de_gta_san_andreas_para_xbox_360_trucoteca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/60424615497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/bombones_de_chocolate_rellenos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/beverage_air_ucr48a_spec_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6835/files/93228055431.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 6

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_off00005008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5008 5884 bytes
SHA-256: 8bc625fa28de0b24a1d1ffe0a631ec44a4ff145c4f8781322b62d0ede566a360
font_01_sfnt_off00006401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6401 9948 bytes
SHA-256: 4b636181efc16dd8672764644b45cda765bbbd92810b9154f5c07f01c01da635

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