Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0720751d1bc7b83…

MALICIOUS

PDF

91.5 KB Created: 2021-01-18 09:27:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cdcab01a69407f68fdc914624d32ce68 SHA-1: ba5e141bae2d2746e255d926254e64f0e484795f SHA-256: f0720751d1bc7b8376fdb0132b87c968cecfb7ba53a50795efaf0e8a5a495763
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'Joe Friel cycling training bible PDF', aiming to trick users into downloading the malicious file. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or trojan delivery attempt.

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://traffset.ru/123?utm_term=joe+friel+cycling+training+bible+pdf PDF link annotation
    • https://cdn.sqhk.co/kezavilageg/4jbGjdW/74223336054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5fb453362782a.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/bO1jjja/ultimate_farm_simulator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_5f9eacafe47d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f8db24b8c22c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5f9854701e861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_5f9f0111f0263.pdfIn PDF document text
    • https://cdn.sqhk.co/ravawiku/x8vOUje/67761469076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379491/normal_5ff91b37a6fc1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365652/normal_5fc48294dfc2f.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/Hgcihie/9334364853.pdfIn PDF document text
    • https://cdn.sqhk.co/malofavu/jjiihlR/webcomic_list_2014.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463788/normal_60030ddbe0ce0.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/dekogamik/ard_mediathek_app_windows_10.pdfIn PDF document text
    • http://badememaveg.rf.gd/fillable_dnd_5e_character_sheet.pdfIn PDF document text
    • http://xolazituvote.epizy.com/96649083389.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/81809422916.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/woods_of_shavano_in_san_antonio_photos.pdfIn PDF document text
    • http://wudafozejuniv.rf.gd/navabapemizupe.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_off00012aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAD 5376 bytes
SHA-256: 1baaac7600072034a4cab6224009e8c8184ffeb51a83cdb672658057b495bb76
font_01_sfnt_off00013d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D0A 10388 bytes
SHA-256: 7bfda9e7eb8bfb89cf7e5081d8b3cd821e8b9528395d03cda7e17c61b03aab6c

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