Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b1b215dee46a95…

MALICIOUS

PDF

64.2 KB Created: 2020-12-16 23:22:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 80d50f40d2b8e0cc9f13b3b6fb7408a2 SHA-1: d32a9cc1dd8ad72eb7ec0a65558942dd65a8d8fc SHA-256: 26b1b215dee46a95d0109900c681aff937287987eddbb08f42f45f90633ec7b1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a lure related to 'West Virginia inmate search' and embeds a URL pointing to 'trafffe.ru'. This URL is likely used for phishing or to download a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=west+virginia+inmate+search+northern+regional+jail PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486344/normal_5fbf85124cc14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_5fa144bb0d80b.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/vebogotexaf/prospect_medical_commons_fax_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b880c21a-938a-4ca4-887f-b89aa319e8c3/vuraxo.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/gubebivikotituvetapovano.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/wogexalixovepirutik.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/free_context_clues_worksheets_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/52283278891.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/adding_fractions_whole_numbers_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/minna_no_nihongo_vk.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/safiwovunurifizijinutewu.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_off0000bf85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF85 5364 bytes
SHA-256: de09e50841e1ef34ec244c3b9c5bc04e85c031ed9a7de5a1b1b112fc257d8f9d
font_01_sfnt_off0000d1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AE 10072 bytes
SHA-256: 4ee25d90f966db948ef1d7cf6c1fb98ce6e989426ab1d61309ec3a72cfe3bccf

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