Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e07251986c955b…

MALICIOUS

PDF

77.8 KB Created: 2021-03-14 23:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 3702c323dc2f71946be9424fab1cbcc2 SHA-1: d97ba17c6bad47b685291ce47c52af6c06705333 SHA-256: c0e07251986c955bf30fbe183ea703e3cd3811bd8e15b2a8b930b5f5a3667995
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful sites, likely for credential harvesting or malware distribution.

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://druttle.ru/wix?keyword=i-easy+drive+instruction+manual PDF link annotation
    • https://xalovediluf.weebly.com/uploads/1/3/1/3/131380345/gamad.pdfIn PDF document text
    • https://rixuxakixolewe.weebly.com/uploads/1/3/1/3/131380342/e477c8ec70b9fa6.pdfIn PDF document text
    • https://kijujiwovijuk.weebly.com/uploads/1/3/1/4/131453096/kulanafuditu_mewir_banokunegomuf_zugenovivala.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/zLjh9ig/yalla_ludo_mod_apk_1._1._8._3.pdfIn PDF document text
    • https://fexiragija.weebly.com/uploads/1/3/1/4/131409693/2160001.pdfIn PDF document text
    • https://gesofomudejow.weebly.com/uploads/1/3/4/3/134344239/468b41405ac7.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/bhgghhd/evolution_board_game_rules.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/22367b11-288e-4545-b6c0-5338940b42b3/what_is_corolla_le_premium_package.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d382265-324b-4900-8302-4de23f6b0f81/77715796274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/136bc426-cb11-4404-b069-44e2627f114b/76878199068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e75f7df-5ad4-4c6a-a59f-59e214b2311c/how_to_unlock_rca_voyager_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ce12d7-300f-4998-bcfb-872625f1723c/fezinaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897b6db7-d7af-4d1a-8960-5f42c84acce5/fapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8211b2f2-dca6-4a9e-b2fd-7f6fa3ae56b3/bosefarepugeso.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33C 5216 bytes
SHA-256: cc899875db6728bded6580c10592079a9f055bab9ee9c4767594ed62c1dfc504
font_01_sfnt_off000104f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F3 11024 bytes
SHA-256: 14847d05f503f85978391e3ac1ab3f86e67f420e17a8ecdbf598dce7c5fd629b

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