Malicious PDF — malware analysis report

Static analysis result for SHA-256 8371246433e9ada4…

MALICIOUS

PDF

81.5 KB Created: 2021-04-14 18:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8701167ad9e00bbbb4517d18fb586cae SHA-1: 662e32a2312a421869a2ba2973d15342bc4dedc8 SHA-256: 8371246433e9ada4eaeb8b71a200f132422e778d3c54c282684040f734850599
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL that appears to be a lure for driver's license renewal information. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious website for phishing or further payload delivery.

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://xajibur.ru/strik?utm_term=nc+drivers+license+renewal+appointment PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451544/normal_605cdf452ca54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475204/normal_600b70423d920.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/bf2Thay/fire_death_race_road_killer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/h70zjhV/usa_dating_chat_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tojorovexuw/Gpgjihb/ireportservercredentials_is_not_defined.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402932/normal_6008217601be9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468831/normal_5fe208ac9036e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406771/normal_604842b5cff13.pdfIn PDF document text
    • https://cdn.sqhk.co/lazemowul/j05zQjc/papupaxasu.pdfIn PDF document text
    • http://tesocoin.online/billiards_pocketless_table8ylai.pdfIn PDF document text
    • https://cdn.sqhk.co/lamajemomu/hghbhbk/visilegiw.pdfIn PDF document text
    • https://cdn.sqhk.co/xipapotug/gfCRZrQ/52019057216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402294/normal_605f74c627678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367275/normal_5fee8936ce14b.pdfIn PDF document text
    • http://abreudesigns.com/64496008421m3oo.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447662/normal_603ea0bbd9955.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/sojenozap/how_much_money_does_someone_with_a_marketing_degree_make.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/can_you_have_a_trustee_removed.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/30980520596.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_off0000fb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB19 5340 bytes
SHA-256: a90bbc384a7e74c8e7ae0f9c0c23374cf9f39f30fc2cc1afa5ab9b80a84b4e87
font_01_sfnt_off00010d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D49 12352 bytes
SHA-256: f60125c7772648498bf8e5d0122afc76e01c7656ff2936a43ec00cb3741d3458

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