Malicious PDF — malware analysis report

Static analysis result for SHA-256 16dbd91f05c2fdc0…

MALICIOUS

PDF

78.9 KB Created: 2021-03-05 23:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 98dd10ec18a773e3e14b602d784f0d40 SHA-1: a4e469501f380d016ce4c68930af6d2a9db1a214 SHA-256: 16dbd91f05c2fdc0ae2b41cf6b62e50f9e970b6541a469bf89cb5fb72cd6ed95
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://ponafet.ru/wix?keyword=my+little+pony+game+cheats+for+android', which is likely a phishing lure. The document body, though heavily obfuscated, appears to be related to game cheats, further supporting the phishing pretext.

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://ponafet.ru/wix?keyword=my+little+pony+game+cheats+for+android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463272/normal_6005fcf5e9503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_5fea26d239417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368467/normal_603e62c20662a.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/76994683544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_60403dba16257.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/9021763048.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492259/normal_6002f7911f9be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pinininun.rf.gd/69494345098.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/mamonde_mask_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/68090275381.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/anger_management_for_dummies_free.pdfIn PDF document text
    • http://dukodisedibuji.epizy.com/donikibanu.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/xezejavulefuxodamiwut.pdfIn PDF document text
    • http://kiduxoz.epizy.com/kuxisedijunesalesem.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/sp_balasubrahmanyam_kannada_hit_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/is_indian_stock_market_open_now.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/dynamics_365_licensing_guide_on_premise.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/autocad_civil_3d.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_off0000f567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF567 5676 bytes
SHA-256: f10535883666b34b7060469d6e8e6a37ea67ae969c325fce1e907ce5cbf2eef7
font_01_sfnt_off000108a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A3 11280 bytes
SHA-256: 69d51865bea5e21cc88f9e9be21929bde35dcb343deeb09a1b28e8cb203108ee

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