Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cde08d33aca6cf7…

MALICIOUS

PDF

81.4 KB Created: 2020-12-02 00:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 109deda04cc293932d129574b858519e SHA-1: 788d5a5fcb1f948a2c52349c7a01880b907dfe24 SHA-256: 2cde08d33aca6cf7ed62f010144c7cad6b3dd52882c6b5af386ce86a134b4ee2
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 an attempt to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were extracted, the presence of a malicious URL is a high-priority indicator.

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://traffine.ru/aws?utm_term=music+sheet+template+photoshop In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383574/normal_5f9b33df5d1e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_5fb5f7710ff4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5fadc20fab4d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f8847c65a589.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5fc509d72cccf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc28eaf9698b02c7f2b2aca/t/5fc5df163485235c8691e8e6/1606803224970/waltham_youth_baseball.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f410e3b1-1c79-439e-869d-bdc3933be307/gadanifewejuvutobax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33177b9d-50ca-4cd5-9e7b-46fd054c8023/40272383082.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1bcf424b06a7eb3051a73/t/5fc49fa44f983757207275b8/1606721444539/bijum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb78eb25-b97b-421a-88d5-6df219bea054/xekibonuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8b0c5c-b6d7-41c7-9a6c-dfccd15fe4de/37896061502.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f0f6f7cf8c7540383d7d/t/5fc3e3e618e72e5fdb4fa17d/1606673385551/how_to_beat_undyne_the_undying_cheat_ps4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe895e5c7695ca99606f9/t/5fc3e05161e25426e1af199d/1606672466286/36859712948.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_off0001027f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027F 5080 bytes
SHA-256: 8e359899f11dce7dd5f96320aa8201a8e6a4827e134bb13fc12e3768c01bcbce
font_01_sfnt_off000113ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113AB 10948 bytes
SHA-256: 8858199166687a6374edd673618823670de5a9f772f871a57f74355714063cd0

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