Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b46757ef9551102…

MALICIOUS

PDF

73.8 KB Created: 2021-02-24 18:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a720a6dc7d9ab63515012e45870dc052 SHA-1: 6bb1c0f260ce92cf7fcaeab2d613dc213e6b0746 SHA-256: 8b46757ef955110291ef2c1685c59a2a5e3192be839ddc8d2fbd68dc3f4acb2d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains numerous embedded URLs, one of which is `https://bologen.ru/wix?keyword=sports+heads+basketball+mousebreaker`. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=sports+heads+basketball+mousebreaker PDF link annotation
    • http://teenagetutor.net/95253327600o0v5k.pdfIn PDF document text
    • http://pro-komp-master.website/battle_of_gods4olor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483075/normal_5fd0949cb16bd.pdfIn PDF document text
    • http://stnold.com/3517472662t50in.pdfIn PDF document text
    • http://stonersfranchise.com/6872045809rn2mm.pdfIn PDF document text
    • http://reduslimitaly-official.website/plan_cadastral_informatise_gratuitft0ok.pdfIn PDF document text
    • http://sushibara.net/pacsun_applicationgi63y.pdfIn PDF document text
    • http://stalekost.site/samsung_un40eh5300f_manualzm68o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_600ec2a7f2aad.pdfIn PDF document text
    • http://beststudent.space/jazz_piano_sheet_music_free6tymm.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/jeduzizonox/xaguvukadanut.pdfIn PDF document text
    • http://nufejubonuviwo.epizy.com/xudumekatozutimopu.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/farizelanujulu.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/40776989731.pdfIn PDF document text
    • http://fejukuvazov.rf.gd/63693634661.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/attestation_formation_civique_et_citoyenne.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_off0000e463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 5508 bytes
SHA-256: 8b169531b9b40d9bff92710ec0cd98121032b107a503c3c3261ff5c8ce1fd071
font_01_sfnt_off0000f6e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E4 10240 bytes
SHA-256: f96f76216ad90b981a962d3e43f9feded6544f6e4b31b59f21d7b1fdef1633cd