Malicious PDF — malware analysis report

Static analysis result for SHA-256 191cbbf9d4a23b3c…

MALICIOUS

PDF

77.4 KB Created: 2021-02-26 16:59:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2b46c979701911e075cf1abede6f6f94 SHA-1: 4be7e806dbca11a93bdfb03973d2e1ce5af364d8 SHA-256: 191cbbf9d4a23b3c678e84095e8096dd7dfa05e4068d71078a23feff43d87d9d
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to download a secondary payload. No scripts were extracted, but the presence of the external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/award?keyword=tabla+de+distribucion+normal+positiva+y+negativa+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488574/normal_600a0c2abe5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463791/normal_6035c976ba821.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422133/normal_5fcdfecea987d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fd3191c6593a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465941/normal_603901ab9c0be.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/iidhgFQ/best_pumpkin_carving_tools_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/GRhejfZ/49840346760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_602f1731c477d.pdfIn PDF document text
    • https://cdn.sqhk.co/gediwuwanol/gpFjcUB/townsville_car_crash_yesterday.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383464/normal_6033b759af324.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/slhWhgi/limexaxa.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/godewumazek/95288445843.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/agricultural_business_plan_format.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/34494239942.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/aqa_gcse_english_language_2019_examiners_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/bowers_and_wilkins_zeppelin_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/castrol_magnatec_5w-_40_c3.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/electrical_safety_certificate_uk_template.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_off0000eaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAD 5724 bytes
SHA-256: 239bf36b502dba4c0991d90251a3b918139fac1bb7e39683cd49dcfd4a299995
font_01_sfnt_off0000fe1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1B 12596 bytes
SHA-256: 030f66e713d12bc8300e405e5b92a7801ca701217d6a9ad61dae5860fbca1006

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