Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd9a926ac68bf26…

MALICIOUS

PDF

73.8 KB Created: 2021-02-27 23:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a3e7def70b627000d6e9bc7654326163 SHA-1: d1098938e8631bbbcee7f459c01b3be53cbe7ce1 SHA-256: 3bd9a926ac68bf26e9ec9bdc0778fa64d31e09d3b7fa2ecbbe8f59f91b716a4a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or scam attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content, likely for credential harvesting or malware distribution.

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://baarspo.ru/strik?utm_term=how+much+is+a+new+2020+maserati PDF link annotation
    • http://ekzo-fruit.ru/cold_calling_email_templateshf83y.pdfIn PDF document text
    • http://christinaanddavid2019.com/mortal_kombat_armageddon_ps21bca0.pdfIn PDF document text
    • http://websporizlehd.com/buzebenudiwi2t73.pdfIn PDF document text
    • http://yoga-fitness.space/prestonplayz_videos_todaysa30p.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/949377961354mkdu.pdfIn PDF document text
    • http://epaytds.xyz/como_hacer_una_hoja_de_vida_actual_2020nt30k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417214/normal_5fe08d2d30a26.pdfIn PDF document text
    • http://tovelksa.website/florida_financial_affidavit_short_formqt3fh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417408/normal_6037403731e04.pdfIn PDF document text
    • http://file-id.ru/555953196383tg5h.pdfIn PDF document text
    • http://torchqbfl.fun/baidu_browser_apk_latest_version73jny.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/mukut/rukiketu.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/miwazasuwuwegatu.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/vehicle_accident_reporting_centre_london_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/easy_border_designs_for_a4_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/zixebutojosobajanewofosu.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_off0000e2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 5332 bytes
SHA-256: f052432c5cedc821b54d19c4e76053d90f9ed631b3e1f14cce4ff6a8ce0d66f3
font_01_sfnt_off0000f4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F5 11028 bytes
SHA-256: 1e6dfdb729598c9c4d73a730915a6e78f107737b7b48d7f1c13017aa4c3261fc