Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c302e31a46cacf1…

MALICIOUS

PDF

66.1 KB Created: 2021-02-25 03:40:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0d2fb8dd2d68e142e531836c77062d8c SHA-1: 30ddea21ac5f03b5766f032b6f8ec86f545732fe SHA-256: 1c302e31a46cacf19836950c87245315c9c4d40f13aaf0baccbf330968e53649
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://baarspo.ru/strik?utm_term=hp+probook+6560b+bluetooth+driver+windows+7', suggests a phishing or social engineering attack, likely attempting to trick the user into downloading a malicious file disguised as a driver. No scripts were extracted, but the presence of an external URI points to a downloader or redirector pattern.

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=hp+probook+6560b+bluetooth+driver+windows+7 PDF link annotation
    • https://cdn.sqhk.co/xamitarerivu/jifZijt/racer_off_road.pdfIn PDF document text
    • https://cdn.sqhk.co/fokodusi/lgqhjhg/16464898773.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410714/normal_5ff34eda92fce.pdfIn PDF document text
    • https://cdn.sqhk.co/nijodujex/thixgdU/tozejilutepifejovet.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/gd4iid8/gwent_android_external_storage_full.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/Thijjge/32716412774.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/ZibifGU/light_up_reindeer_outdoor_walmart.pdfIn PDF document text
    • http://fepekasizu.iblogger.org/asus_vivobook_x510ua_manual.pdfIn PDF document text
    • http://theboldpantsproject.com/kewisidurisolapug0yhxz.pdfIn PDF document text
    • http://budivabod.iblogger.org/kumipoxosenebif.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/fjfaijg/ballz_3d_snes_cheats.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laropijodozu.epizy.com/play_store_app_jio_store_me.pdfIn PDF document text
    • http://wuwovedivaz.rf.gd/hotel_chief_engineer_resume_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_off0000c5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B5 5656 bytes
SHA-256: 87829413f10eb28aa20218e254f7c464eea06c71978009b60250823206f244a6
font_01_sfnt_off0000d901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD901 10056 bytes
SHA-256: 5d1b917d36b760da997290b6be6883450d30e73d8a7f97d16a126bec21459dcf