Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfbe5b15984851d…

MALICIOUS

PDF

48.8 KB Created: 2020-08-11 02:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90891d63bb52caf686e98d8c6782e540 SHA-1: 8b15b0d06a9004131373697151beccd0ea45da0e SHA-256: 9bfbe5b15984851d8c5ede675b49ece317621a76bf4c7dc4f65341869e9faa22
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a link to a PDF about philosophy. The document body, though heavily obfuscated, contains the same URL and a reference to 'wkhtmltopdf', suggesting it was generated by a tool to create a malicious PDF. The presence of numerous links to Shopify-hosted PDFs, while mostly benign, indicates a link farm strategy 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.ru/pify?keyword=alain+badiou+plato+s+republic+pdf In PDF document text
    • http://files.southcostaricatoursandfun.com/uploads/1/3/1/1/131164393/zuwaraj-puzofijuzu-pigigojipip-lagukas.pdfIn PDF document text
    • http://files.hchsmusic.com/uploads/1/3/2/7/132740930/kifemopivod_gusozo_gajiz_wafelefeleg.pdfIn PDF document text
    • http://files.mskenny.com/uploads/1/3/0/7/130739480/99fbcf0.pdfIn PDF document text
    • http://files.theflatspot.net/uploads/1/3/1/4/131437293/koserapudag-fexememedi-pujirasob-debobimakem.pdfIn PDF document text
    • http://babunim.zatoluxury.com/uploads/1/3/1/1/131164250/8be2201.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/1/0434/5239/9777/files/legazubibefedab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/rovamavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/65455469427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/80685565537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/msn_zone_hearts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/98471694114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7965/files/38107714274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niborenegukudokeregus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/retij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2050/7544/files/bisection_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/sublime_directory_ubuntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/lafexinavuloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0918/7750/files/nuripiziw.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 8

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_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 5276 bytes
SHA-256: d4c7bb2d7301ab61eb7169d9426677f4858137b395be4bf0cb3723279cc56c1b
font_01_sfnt_off00009266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9266 10376 bytes
SHA-256: ec7c0fbd81c66a7a67ea758dd8027b4ff2e74d90ed0f78c031bca23d732a87bd

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