Malicious PDF — malware analysis report

Static analysis result for SHA-256 209f286b377feb18…

MALICIOUS

PDF

70.8 KB Created: 2020-12-07 23:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 518491cbf7b7fa0716904e84d2fe3cbd SHA-1: 1ba1ee31e945aad02df127f64328b908aa78716f SHA-256: 209f286b377feb184c90500a5301d3d9ad07fb614363dac95ffd9b51c78e6a17
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body, disguised as a tractor parts manual, points towards a phishing attack designed to redirect users to malicious infrastructure.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=long+360+tractor+parts+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_5f8fc1a749560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485801/normal_5fba654b00b25.pdfIn PDF document text
    • https://jomimufigaz.weebly.com/uploads/1/3/4/3/134319247/6aabfc8c.pdfIn PDF document text
    • https://leniwexobopusez.weebly.com/uploads/1/3/4/7/134713406/9916361.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/090e086a-2429-491e-bddf-9d00d165df58/stardew_valley_building_tips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8fabbe7-4698-4c2d-b328-c618ae4e11ce/94192199027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b25128c-fc2d-47c4-a46f-0d8ae5f521a4/cash_cheque_payment_voucher_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d069ef52-50c7-461f-84a2-71b76c7650b1/lelozobufubevazefimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55fa9866-e73d-4805-8f76-d3f4d5342b85/definicion_de_burocracia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffcc36609fd0ee78c2f31/t/5fc0dd1964571256545babfb/1606475037792/pearl_jam_stickman_fabric.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/66_games_unblocked_ez.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cb0188c99b6d37c032fb/t/5fce3467eb18547f4baf334f/1607349352609/chikki_mod_apk_unlimited_money_free_download.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_off0000d565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD565 5876 bytes
SHA-256: 6f2f3de90bdf0d898ef93850ac34425e6c9df430c00b06eebb90473f18c85546
font_01_sfnt_off0000e959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE959 11240 bytes
SHA-256: 7582e8d3b4e1a1a2b05f51d409402547d134d67a25117b80277cabb16de7e833

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