Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96638794ddd24ac…

MALICIOUS

PDF

41.0 KB Created: 2020-11-02 20:03:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 09b8bd999f07bd90c850250693eca4d6 SHA-1: dcb220128764350acb914e1fb6ad7830131e0ba0 SHA-256: d96638794ddd24ac8485cb3033f66ba2baa06acb9e6d1c6f00028bc842d2814a
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://ttraff.ru/123?keyword=tamilyogi.com+movie+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f886acd5ef76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_5f90a20f1e669.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/1b2c3cd7bb317.pdfIn PDF document text
    • https://ligapixoxos.weebly.com/uploads/1/3/4/3/134378271/gitebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f8b4945a6fa2.pdfIn PDF document text
    • https://jodobape.weebly.com/uploads/1/3/4/3/134317169/vituxovuwisip_raxamajaxotevor_tovojinivuwusuv_gadonajalizal.pdfIn PDF document text
    • https://watinadapazibe.weebly.com/uploads/1/3/4/4/134492378/zoritevuzabutunon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6288d0b8-d159-46b2-82ae-fffc6f6f54e9/8330749420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fe54e2f-de7f-4f6e-8c67-3f6f3747ab9c/fulupenid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/406e6c48-fb6b-436f-9da2-3ef5e32b87a6/46035460953.pdfIn PDF document text
    • https://s3.amazonaws.com/fufaragebo/60098846422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6305687a-c145-4d4c-99a8-4a0284aa66a9/angela_carter_the_bloody_chamber_waterstones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11282a02-4a72-4a6a-9096-e329c5887506/nasuwasikizogob.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_off00006061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6061 5220 bytes
SHA-256: 9005c9d8cc50474558febd61faab66404a2ccd86c6dcc2332f4b4cc982f631d8
font_01_sfnt_off0000723b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723B 11004 bytes
SHA-256: 5a09f3b4a0d9f6d7be1519907c4a73604d034fe61e1267d7512c8128afd7576b

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