Malicious PDF — malware analysis report

Static analysis result for SHA-256 d591292a0b8c6fad…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 13:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0da3811613b42366cbbf47bfa85745cb SHA-1: 768ddbe2807793e4252aedf1609056713428db88 SHA-256: d591292a0b8c6fad8d1df9d69a71c9930621ffab59965ff7eeda889bc934c1cb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a movie title, likely intended to entice clicks. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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=pirates+of+silicon+valley+dual+audio In PDF document text
    • http://gixarenug.okgfdhotcpha.org/uploads/1/3/0/7/130774978/1584510.pdfIn PDF document text
    • http://files.barcelonaappartement.com/uploads/1/3/2/6/132681783/dopupo.pdfIn PDF document text
    • http://files.h2osushi.com/uploads/1/3/1/4/131407089/9656379.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/1/0434/0524/6631/files/aluminium_phosphide_poisoning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/sipivexawosanuwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4910/6073/files/nims_200_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/rinuvile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/xunenixovusipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/65701557565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/vedematiromakoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/101_benefits_of_black_seed_oil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0402/6280/files/98866755812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/66171832847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/96242350346.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_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 5176 bytes
SHA-256: 92ef07837ae2af70c2132694e68c4f1f1f34ddf7b64f7d2aa6067ed0d3dbff77
font_01_sfnt_off000072cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CD 10372 bytes
SHA-256: 8489d621bb133bd4b9556a577270f488b620996b111a437299f7f3d43ac1e153

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