Malicious PDF — malware analysis report

Static analysis result for SHA-256 3965fd55eeeeb31b…

MALICIOUS

PDF

69.8 KB Created: 2020-11-21 06:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d7a076f4ac452575c5e2ccdeb7006e04 SHA-1: 9c3f2a336d2bfd0827d71d7a8bd2da88e0563c82 SHA-256: 3965fd55eeeeb31b855c924ee60cd859d6be274626061c04ea10979e7b2d9620
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://trafftec.ru/aws?utm_term=digestion+perfecta+chopra+pdf', which is likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware distribution.

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://trafftec.ru/aws?utm_term=digestion+perfecta+chopra+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5fb384c359ffb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5fb5a4d44b9c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdb279ea-f6c4-4063-ab1e-9737d5e5b1ac/6707223945.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/uthgard_cabalist_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf3f2aa-c16a-4f65-a3c3-ed9b89049159/mitsubishi_forklift_fg25n_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c880549-bef7-4806-8565-879d57995244/88153866802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdfe7e5-c4bd-4581-bf21-41cd413a62db/jogos_vorazes_em_chamas_online_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4faa607c-c60d-4866-8934-0212cd95bcf8/jerinabejozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381ddf2b-b96e-4b87-b10d-1f875250a226/advanced_microeconomic_theory_jehle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58f97398-8ce2-43ee-91dd-5c316cf1396d/chardee_macdennis_level_3_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/87311808569.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/76_unblocked_games_slope.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/computer_full_form_of_kips.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/65531667741.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_off0000d489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD489 5384 bytes
SHA-256: 92da9810ff5c0e67e14d04c13361311a0a01e2f0c59c03e1cd937d91a6c2a8ee
font_01_sfnt_off0000e6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DA 10352 bytes
SHA-256: 77d650f63297903fb2eae72a79fa197073fd56484e13c0e8200e69be914c429d

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