Malicious PDF — malware analysis report

Static analysis result for SHA-256 0767c114f14f6dd4…

MALICIOUS

PDF

81.0 KB Created: 2021-01-06 11:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 22a7c46435900defed53c1faa0cd5bc8 SHA-1: d1d38090725a45d6b2657f2759982cbd6d14d579 SHA-256: 0767c114f14f6dd4c72356513a288e43db6259baee3a367061d26b2f4e0a31bd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to financial templates.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=free+expenses+template+excel+uk PDF link annotation
    • https://cdn.sqhk.co/xowuzaseku/IIidHPu/tesaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f95d5ebdf906.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/Eidjfih/draw_a_stickman_epic_3_pencils.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/3b853e20-d9b2-42f7-b627-a768c716a0de/happy_halloween_pictures_for_facebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb4afd7-0e73-4404-bc5f-f974714b64f3/92375267393.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/jenodesonamojutam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9559404f-830a-4c1c-864a-3cb7a66e5ebc/facebook_lite_app_apkmonk.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/13690102496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c60931d-6902-4c83-a8b5-eb5739acdc4d/planilla_de_datos_personales_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc04a68-58de-4992-95d3-1c94bdca29a4/coast_guard_auxiliary_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dc4ac83-344b-412d-89b6-355bfd7ca88a/loving_tv_series_1983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92465fb3-c660-49e4-b257-577ae09eea7f/atomic_radii_size_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a22806f-4c34-484c-888c-e41b7eb0759c/vubixokaxosomiluzi.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/clinell_wipes_safety_data_sheet.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_off00010068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10068 5164 bytes
SHA-256: 49fd5d54d0b264bd66b990c54a19a214b03799bd286ee20824ebb3300d968e2a
font_01_sfnt_off000111ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111EA 11452 bytes
SHA-256: f9613a89536cfb39e96f9bcf9470c7ad7e10e3cf469f98c8f7727ae3ad7e6b64

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