Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d29406e6293eaf…

MALICIOUS

PDF

75.9 KB Created: 2021-02-24 15:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 904d5d7a7555fd3945dbb922890b0c31 SHA-1: 891370aa17dead41673e591de9561267d3543c1a SHA-256: 91d29406e6293eafb9de1fbe142f517a4f888793b8e16e87923049d0621bfd3a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of external URIs and the overall detection profile suggest this PDF is designed to trick users into navigating to a harmful site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://maypoin.ru/strik?utm_term=sharp+microwave+drawer+service+manual PDF link annotation
    • http://xisubov.iblogger.org/66348242329.pdfIn PDF document text
    • https://gagegopered.weebly.com/uploads/1/3/4/8/134880179/9d765128e.pdfIn PDF document text
    • http://thelandofbadideas.com/35193229799ygqxz.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/free_brochure_template_for_word_2007gfdsb.pdfIn PDF document text
    • http://trend-sales.fun/gafubawozisofijamobatufobx4ssv.pdfIn PDF document text
    • http://zebakabum.iblogger.org/totin_chip_placement.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/fowonaxul/tour_itinerary_format.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/18194291613.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/mikaxupetoditagadowikosu.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_off0000eaa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA9 5568 bytes
SHA-256: 26db2634ad48768f5702f1f41d76220a4a9269bec35e0ff0d417e43bef6c584d
font_01_sfnt_off0000fd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD80 10964 bytes
SHA-256: 414ae57fdf299fb7204b3f5b7b75d02e16979e3c65935b2df8f671b67036a084

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