Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e1dc51f26c67ee…

MALICIOUS

PDF

69.3 KB Created: 2021-02-06 01:25:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b103179b94c2fa097d8da29f16a50c09 SHA-1: c8ff5518b30f1a39e5bdbb972c58fdf3a2dbed3e SHA-256: 31e1dc51f26c67ee6267343b41e02e1244e130a86b503b8bf9b4bf50e7a7c06d
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, suggests a lure related to 'Notification android auto'.

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/wb?keyword=notification%20android%20auto PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485163/normal_60037a3fa491d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482216/normal_600e81026fca1.pdfIn PDF document text
    • http://bigchance.pw/bonnie_and_clyde_beyonce_free_mp3_dod0vgq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5fedbffe5852d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409610/normal_60049ae8c13c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451971/normal_5fff6f739a750.pdfIn PDF document text
    • http://jobauthor.online/36781130246nk1hn.pdfIn PDF document text
    • http://llloooodddd.space/47207121735b9c97.pdfIn PDF document text
    • http://reduslim-shop.site/13849243641n8c1b.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/dinigugaxej/8770232958.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/separation_agreement_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/41022665095.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/wojopobid.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/beef_curry_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/jenup.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/jspdf_autotable_header_border.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_off0000d466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD466 4772 bytes
SHA-256: d4900a26b595ec2408f92c48caadd67168b33856fc64acbd1d3628c3bd1925ef
font_01_sfnt_off0000e4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B7 10528 bytes
SHA-256: 2ac456b1f1f9c231f46f0e6381fd5cbc94485044acfe4276077d56ea187f55c4

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