Malicious PDF — malware analysis report

Static analysis result for SHA-256 3466b9f10c965ae7…

MALICIOUS

PDF

70.8 KB Created: 2020-12-01 15:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 42a6d9e8677833cc927a0d6480b3f234 SHA-1: 1e689662e14a9739834e7d3f6bcfed151e836718 SHA-256: 3466b9f10c965ae71ab5e3fbed3676cd9e1c5491fa75de49670a0bf0bcea8ac8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for PDF_SEO_LINK_FARM, indicating a mass of external links, with one prominent URL being trafffi.ru. The document body, though heavily obfuscated, contains text related to 'power levels of super saiyan', likely a lure to disguise the malicious intent of directing users to the link farm. The presence of multiple external PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=power+levels+of+super+saiyan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412170/normal_5fa283c96d61c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481285/normal_5fadd8a578ee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f8906d95d172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427095/normal_5fbab806029ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f945fb3e242d.pdfIn PDF document text
    • https://kowepesabileb.weebly.com/uploads/1/3/4/6/134635017/marig-gujemijorizepe-molopozena-jizogitapolodur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc2fc0efa04221c71829e4c/1606614037336/sinejusozukakopupuvonavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ddd5c2a-cdc8-460f-a1f3-8e4da4a434e7/24015899539.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f79e2e34347c7044618a/t/5fc2fb7f7acac6192a231d53/1606613888423/49861637241.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/breath_of_the_wild_complete_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf61fa1972c46e3c96883f/1606377984413/nokenelirenojejep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5717ec2d-2c43-46ab-bcbc-806d5af410a2/pagezabafezewovobulumel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0699173fb5383b68d63f/1606289049811/cra-z-knitz_ultimate_designer_knitting_station.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EA 3932 bytes
SHA-256: ba5272a3d83dbdfcc79e647602ed128d03c3ad3cba2eabb7d60ca96ad4f089e6
font_01_sfnt_off0000d7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C4 5148 bytes
SHA-256: 9ed0b1884febe2c20edb57061c77c14564a5a81896f8d4bd055b6050d31c4ca2
font_02_sfnt_off0000e972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE972 10856 bytes
SHA-256: 4b636a04dd46be301a700b97ac15ed5fe9473222fd3ae0ee4e42d9e54d8a0da9

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