Malicious PDF — malware analysis report

Static analysis result for SHA-256 236a4184cb9314c4…

MALICIOUS

PDF

60.4 KB Created: 2020-08-11 14:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 572fbea9a4fb8230a1c137dc88b582d2 SHA-1: 75426a961b75436924f6c495cf53ad8198178249 SHA-256: 236a4184cb9314c4ba2c57d29f9d27d453b911772cc43dca4108470c5336378f
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Cain and abel story pdf' and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on shopify.com, likely to improve search engine ranking for malicious content.

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=cain+and+abel+story+pdf In PDF document text
    • http://files.koreanatoledo.com/uploads/1/3/0/7/130775062/8099132.pdfIn PDF document text
    • http://files.andrewcollinsart.com/uploads/1/3/0/8/130873941/noviwe.pdfIn PDF document text
    • http://files.disneychristmasparty.com/uploads/1/3/1/0/131070894/zakidutimirixer.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/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/55364399747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4178/2946/files/65679919310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/misulizamapin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0114/1657/files/air_ticket_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/75239217653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/pokimalifuworobelugedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/42067613353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6091/9446/files/bikomakivinudox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/wirazidalotujujafemarawoj.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000cc57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCC57 16980 bytes
SHA-256: 4104512829e79b0bf56edfd7c2d5b1eff3efb118d2d3663921440964c23bc63b
font_00_sfnt_off00008cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 5184 bytes
SHA-256: adf2bdfe7c49d50730870f231f439a9557e7a2991de341a43de51a3c820c16f1
font_01_sfnt_off00009e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7B 13836 bytes
SHA-256: 80ccfbb5c2021382078132c809d4424469b8efe200219067f923be0bf8e27797

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