Malicious PDF — malware analysis report

Static analysis result for SHA-256 5665af16db3dd52e…

MALICIOUS

PDF

67.1 KB Created: 2020-12-21 02:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6d9b61652e47873692bb09a17c6578a SHA-1: 14901a2a9d53317801e196a8e87ebf6d3ef37b29 SHA-256: 5665af16db3dd52e1dea5babd1b5040c4d329df27f6efb4b5eb611dd5d029933
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://trafffi.ru/strik?utm_term=final+fantasy+characters+names` is suspicious and likely serves as a lure or a download source for further malicious activity. The document body, though partially obfuscated, contains text that appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=final+fantasy+characters+names
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f92357403214.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc17741e5c7695ca99fa7a5/t/5fcc158fe43f2b00a89664bf/1607210386707/woodshop_diaries_kitchen_cabinets.pdf
    • https://s3.amazonaws.com/leteraxewe/lateral_view_of_the_brain_diagram_labeled.pdf
    • https://s3.amazonaws.com/padadutiseni/59719563858.pdf
    • https://s3.amazonaws.com/samopakamefap/51541406554.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/buweloperesewidaloli.pdf
    • https://s3.amazonaws.com/tibitexil/elements_of_electrical_engineering_book_free_download.pdf
    • https://static1.squarespace.com/static/5fc3a23e7848ba205d29b2a8/t/5fc738335060c93fcd7981c8/1606891572445/79266465709.pdf
    • https://s3.amazonaws.com/putelekireza/suxuzaxigasiberepo.pdf
    • https://uploads.strikinglycdn.com/files/220e2691-294e-41c3-bc7f-6fb8d6dd2147/givopataxigofuxugakerek.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c3.bin
36e8ee90968673a325598114e20e1478e54e9debf95ba3796370a699391e1a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C3 5176 bytes
font_01_sfnt_off0000db46.bin
40ab84944feb3c9c7774a2356066ecb0f9d756efb0db54ccb9df8842de0bed2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB46 10668 bytes

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