Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2406464b8c6999f…

MALICIOUS

PDF

69.0 KB Created: 2020-12-04 03:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14b5935355339b61d8837eeb08d985b0 SHA-1: 743da814244e75315a2814135c3614e7bfebc497 SHA-256: c2406464b8c6999f9802ba022e07fe48445aa9a23977ab5e1196e5cceb2e3801
104 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a machine learning classifier and ClamAV. It contains embedded URLs, one of which, 'https://traffking.ru/aws?utm_term=payment+follow+up+sheet', is flagged as suspicious and likely part of a phishing or malware distribution scheme. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to mimic an invoice or payment request to trick the user into interacting with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/aws?utm_term=payment+follow+up+sheet
    • https://nirodafudo.weebly.com/uploads/1/3/4/6/134697392/lirusajame_padowosifos_mitivakeki.pdf
    • https://tetugisiwapasuv.weebly.com/uploads/1/3/4/7/134744560/jubiwuxifop-jugefokame.pdf
    • https://jemajodelevo.weebly.com/uploads/1/3/4/3/134394711/guserapetagujageket.pdf
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/1600998.pdf
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f92c8ca64240.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/623da0ec-e63a-4b6c-a0c8-f75f452c0a48/20352921037.pdf
    • https://s3.amazonaws.com/dabatisew/53671893925.pdf
    • https://uploads.strikinglycdn.com/files/1f6b0aa5-87eb-43ac-9390-a14280945098/pioneer_fh_x700bt_review.pdf
    • https://static1.squarespace.com/static/5fc0e7ad6609fd0ee79153f2/t/5fc346b09d79364840f772be/1606633141082/sesame_street_logo.pdf
    • https://uploads.strikinglycdn.com/files/c7efae87-1d15-48e9-ae41-a108cf8ac762/gajanugafifuk.pdf
    • https://uploads.strikinglycdn.com/files/7e175718-4e8b-4441-b19d-d2454d52a88e/pixel_gun_76_ez.pdf
    • https://uploads.strikinglycdn.com/files/5f6412e0-fcfd-4ad4-807c-e17afb41a8da/kolapumoxejitaguvetivup.pdf
    • https://uploads.strikinglycdn.com/files/5d59ff6c-40aa-41b3-b6dc-55816ce331b3/ditavugafa.pdf
    • https://uploads.strikinglycdn.com/files/6b16e0dc-0c48-4163-98c1-4210cd83eed5/cubism_art_easy.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf552ef3de5e49b55b3e2e/1606374703248/sulifomako.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_off0000d13b.bin
7cc63b5fdc7f15e73b77bf00d88d7815a7a6cb368273225fcc17a24585f20ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 5240 bytes
font_01_sfnt_off0000e309.bin
27057ad7614e63682c2df2357d51d2f21dc1299e7c07085fb3b5529e2784a316		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE309 10584 bytes

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