Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c727078807e81f…

MALICIOUS

PDF

70.5 KB Created: 2020-11-30 18:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0fac4ca36e48345274f18ac0b1aa8987 SHA-1: 87fefa8b12e689bbf3d73026fe1740940845081a SHA-256: 65c727078807e81faacb76a210bc5f6b20bfab4768f68354d55c25df26b89a02
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffking.ru', which is likely a malicious domain used for phishing or distributing further payloads. The document body, though heavily obfuscated, contains text related to 'Buffalo wild wings donation request', suggesting a social engineering lure.

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=buffalo+wild+wings+donation+request PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407788/normal_5f99f97562854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_5f8d5f6a4181b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5f9792aa2b403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413714/normal_5f94c5d57f0c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5fb4dcde91ad9.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/be1bff05-a34e-4eab-af07-c6c50e6b2793/green_arrow_loans_account_login.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/embedded_software_engineer_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d26908a5-bd04-4a1f-ab6c-600c07460c2d/affan_waheed_height.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6f88e45-a7fb-4ec9-b603-199e6a876f45/norvell_spray_tan_booth_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb95bd7-be86-4e44-b448-0f093a619e9b/talutexijufevotupekov.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/noxiwimupufib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29a04024-cde3-409f-a2e1-30a4a3623e76/tipodi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b9cab79f442f22a6952/t/5fc388e29d79364840fb27ef/1606650085358/a_writers_reference_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e662c3d6-c971-4a89-a5b2-cc78ead115a0/logutebizumosozote.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_off0000d6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F0 5340 bytes
SHA-256: f7bfc5dde47312c117b89291c67784e900c6deae9c873d6e772c6f6248617434
font_01_sfnt_off0000e93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 10540 bytes
SHA-256: 49aaf8c2daa438a45c5678ca70f8f83adf176d45db20bff92a67da3ad355e627

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