Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ae568fd6512062…

MALICIOUS

PDF

97.8 KB Created: 2021-05-20 20:23:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f0322534f5586a137441dc9f10d13293 SHA-1: eced5a46c2a59152c8290c4d3e047da6f0dba592 SHA-256: d6ae568fd65120621f3fc7a75762b08cdaa1a8b71f6921c539046ff73678833f
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to manipulate search engine rankings or redirect users to malicious sites. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The embedded URLs likely serve as the primary mechanism for this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=what+are+some+example+of+symbolism+in+literature PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450513/normal_5ff9800d22dcc.pdfIn PDF document text
    • https://lutigasudubuwa.weebly.com/uploads/1/3/2/6/132695203/gifoxem_pagupumenivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404976/normal_605d84a0549a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_602cd8d8b5658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407306/normal_5fc916b041ce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5fe7ef135dca6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_604fcf9477908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_601515fb0a15d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_60308dbad4662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474750/normal_600f92e5ae0b3.pdfIn PDF document text
    • https://wutowenejeboz.weebly.com/uploads/1/3/4/5/134599911/6658905.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/fffe2299-d640-447e-ac36-0b50493cba1d/58978339576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf6f6be-599c-47c4-bc79-047fb0d7e290/how_do_i_setup_my_brother_printer_to_print_wirelessly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29be52df-3af2-4f16-8918-924660f9d800/69432654670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d114fc82-ea03-4d2a-ae18-8766988b80f7/how_to_turn_on_a_split_ac_without_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ad74bc-0575-4e1f-b93a-8e20eed519fd/financial_accounting_10th_edition_hoggett.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3cfc013-64ae-4459-acdc-3d06df87aa41/what_jojo_characters_are_in_jump_force.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B1 5464 bytes
SHA-256: 939dce2a96540a9310f81551d0e141b3c4e0df5793e3a9674f549b9687c920cd
font_01_sfnt_off00013c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C30 11636 bytes
SHA-256: 9e7fae58b0cce75c5a676e5206b597e63ef7c8c9bb529fac42d45fa8405262ff
font_02_sfnt_off00016311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16311 16524 bytes
SHA-256: 45cb6eda08d6ac80fb52d5232397a656fcd4704205f5c06cb3b85b823cab4515

Open this report in the interactive analyzer, or submit your own file for analysis.