Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb770863e6a4712…

MALICIOUS

PDF

72.0 KB Created: 2021-01-09 07:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 589cbc4d5f38de1c4c100017eb8dada9 SHA-1: ee76cdae5d227bc93aabb8e6d87f1891f36a0945 SHA-256: 5cb770863e6a4712831de2213624ebb585defb9de8b530caea5dc57e05e4faf3
96 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URL, 'https://trafffi.ru/123?utm_term=la+pavoni+repair+manual', which is likely part of a phishing or malware distribution scheme. The document's content, though heavily obfuscated, appears to be a lure, possibly related to a repair manual, to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafffi.ru/123?utm_term=la+pavoni+repair+manual PDF link annotation
    • https://kuxilididid.weebly.com/uploads/1/3/4/3/134387830/welititudif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_5fa698674e111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5fa2baf810087.pdfIn PDF document text
    • https://cdn.sqhk.co/sulubejes/jInh7jg/rocketbook_core_executive.pdfIn PDF document text
    • https://dofolemabumef.weebly.com/uploads/1/3/4/4/134458616/sujosid.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/Whdha4H/roxajetixaweniju.pdfIn PDF document text
    • https://kapadarobuziwel.weebly.com/uploads/1/3/2/6/132696145/5068892.pdfIn PDF document text
    • https://cdn.sqhk.co/sulubejes/vXgcrv6/bible_word_search_puzzle_maker_download.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/berif_jikobuzef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fb5df70d1227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26D 4592 bytes
SHA-256: 65cc0097a2bfc408c1eb97fb3eb405c79ffdf8bd520007f798bd60613d8ccef6
font_01_sfnt_off0000e1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E8 10480 bytes
SHA-256: 4596a171338d5968bec8471832822572b84bd78d1b3fe81de96427c090e1188a
font_02_sfnt_off000105b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361