Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f16f96712f7642…

MALICIOUS

PDF

82.1 KB Created: 2021-02-16 13:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 2ceff2c8724efd962584016baeff0bb0 SHA-1: fda187ff0085227adf3840c8f3c5238f48c167e0 SHA-256: 96f16f96712f7642fe74d5cdb88e2a930cd98002c98f5856208b5b02c5be2394
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm containing numerous external URLs. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the presence of many external links suggests an attempt to redirect the user to potentially malicious sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=cartoon+guide+to+calculus PDF link annotation
    • https://pasezoxe.weebly.com/uploads/1/3/5/3/135347718/6a8616.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/hg3ijie/motorcycle_adventure_tires.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/E9iapih/50728340289.pdfIn PDF document text
    • https://sajefabavasa.weebly.com/uploads/1/3/2/7/132710755/wuxolidedotaz.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/mojuwa_robaro_bapixitikeke_forekubijapo.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/sajurazot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_5fd2d99f38f4f.pdfIn PDF document text
    • https://cdn.sqhk.co/rukugewul/vgj5tie/37793667621.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/fapapekatomixuli.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/zakunafu/13328788826.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/acca_f6_revision_kit_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/2335322582.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/94210642808.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/unmarried_affidavit_format_india.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47A 5012 bytes
SHA-256: 6d97bf5149cf28fef94ef6099d3ac9221eb8d76ba882291d449643229a775696
font_01_sfnt_off0000f58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58A 2528 bytes
SHA-256: 5f9798208e844fcfc36df036afdf425b4bd5904de2d4a8cfb0802fe5fe2f4096
font_02_sfnt_off000100c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C5 10660 bytes
SHA-256: e8f55836dc3996b76271eaa987b28fd456ff047b94a0ad05d689d3526ceaada8
font_03_sfnt_off0001255a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255A 16296 bytes
SHA-256: 8209c5fc27800dad91b79bdc1d2542939faa66d1b2f519a8f9f1b913071849a2

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