Malicious PDF — malware analysis report

Static analysis result for SHA-256 8191b95e5f040ce6…

MALICIOUS

PDF

68.0 KB Created: 2020-11-20 12:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a21beebefcd5f77c2f29f1e1c5abb554 SHA-1: 28fcb1875e3bf0edcc64712c0ba0c669c12cf0e4 SHA-256: 8191b95e5f040ce6252649a96ce6edca104bdbac76948672da8aa40c4bd6ac21
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=agario+hacks+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369766/normal_5f87e3337c98f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_5fadf24a2910a.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/jezobasit/nfl_mobile_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/942c42e8-1033-4b67-8d12-85fd78962e63/la_fitness_ballard_open.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37214b0b-bf41-438d-bce5-1d8957086ec3/82125890355.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/gizolorumowevov.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/29197553573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f27b908-6c31-44ca-8574-94e660046e60/boogie_woogie_reindeer_girl_in_red_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/lomegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edc90164-80b6-4fc0-ae3e-0143dd16a2c1/xamisadusoz.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/stories_with_holes_answers_vol_2.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_off0000cd9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9B 5164 bytes
SHA-256: 6102bacdb54db5e92fb38916bd4f2d01fc9a0869e8381ac328125d2484bcfc6b
font_01_sfnt_off0000df2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2F 10272 bytes
SHA-256: 4f994d7e2882a9f13fbb083ffe6e9e198ddbe43499f245cc68c15f607d9e002d

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