Malicious PDF — malware analysis report

Static analysis result for SHA-256 415f03cfbe96a22b…

MALICIOUS

PDF

80.2 KB Created: 2021-02-27 11:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0d5667dc140e1a34d792d46e7e522a45 SHA-1: 79426aaeaf7e65d6987162ba4d575cbfa085a80e SHA-256: 415f03cfbe96a22bd98de97e0668361082e2214b02d1faaf1ccb249370e68df2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure, presenting itself as a manual for 'Viper 7254v'. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick the user into downloading a secondary payload, likely through a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/aws?utm_term=viper+7254v+manual PDF link annotation
    • https://cdn.sqhk.co/balatexoriv/jbjiyie/rasamos.pdfIn PDF document text
    • http://romeoplanet.club/vabasowonafiwofakum98tk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480891/normal_6015c6984143f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446388/normal_603509957d51c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_6025e74bcb75a.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/hiaqigr/vodafone_yan_mda_11._2._3_apk_indir.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/jiobTia/11st_10_in_lbs.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/gfe1Chh/palikipowaloguxodi.pdfIn PDF document text
    • http://verifiedbadges-form.com/mv_bts_anpanman_wapkas9c9o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494674/normal_6011f7d5b683e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_60257f1cbeaef.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/vavabi/87591053797.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/kalasesugoxerukiraxaged.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/api_570_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/38812483863.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/41353066897.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/17746020283.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/jersey_shore_massacre_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/kgf_amma_song_tamil_status.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/93762522873.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/79661688769.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_off0000fb9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9B 5236 bytes
SHA-256: 2edd35b4d7028af64474372a4dc33307764a809705ff8303fdabe508627d1178
font_01_sfnt_off00010d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6D 11128 bytes
SHA-256: 546b9f2886c3b4c901692d2cd4970243b6b690440e44fc82caed22771c0f773b

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