Malicious PDF — malware analysis report

Static analysis result for SHA-256 56001f5a0d34ddd1…

MALICIOUS

PDF

56.5 KB Created: 2020-11-01 01:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 57d48bd56d39b8a41587d8cc1ad4a99d SHA-1: dbb46e7237ea47ba3e949498e3f05853d121e2e4 SHA-256: 56001f5a0d34ddd14c4f43d6e05046c5fd8de1a7b52c9205c3535325ca5c17fd
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/123?keyword=guilds+of+ravnica+draft+pick+order In PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/6276840.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f9215f0db311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5f8e422e9e615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443804/normal_5f9de86db9bc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f876f0b32230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381085/normal_5f91648723013.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/canterbury_tales_stories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41bad57f-c535-4e87-939a-970e21a6f84f/niwemovudonixinokukuvut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f70f80b-d698-46ba-bd34-4ef021decf97/youversion_21_day_challenge_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/saminiditagibabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5188/1910/files/lyrics_everlong_acoustic_version_foo_fighters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb73b3b5-3210-4f8c-85d0-c2b03dfe34d5/63141569277.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 3

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_off00009eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECA 5304 bytes
SHA-256: 5540c3a352fc045528d61e42ce0de3f6c7358ff196e02875e529eaa3647417a3
font_01_sfnt_off0000b0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F7 10700 bytes
SHA-256: 885426bba4b472a188522d64cb6f6df16f8f48f59e760f95c3b743736571fc06

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