Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ffbf6e1e83f6c7…

MALICIOUS

PDF

124.3 KB Created: 2020-12-31 23:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 651a96e63803d74ee1b17b342163285c SHA-1: 7801239ff96849960bf48dae1b23961ab81efb3c SHA-256: b2ffbf6e1e83f6c75b0d55f42e1b0fc8585f82812117f704e53e9558d30e1af2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'trafffi.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=zelda+ocarina+of+time+randomizer+multiworld PDF link annotation
    • https://cdn.sqhk.co/kebubupoxiz/5gcCjbm/wolo_tv_schedule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_5fae474e39dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417659/normal_5fa8a69569fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8878167db75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5fd6ee1b7a63a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5fc365f8ab98c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465705/normal_5fdddb4e2b8bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1a31e0d6-7700-4ea0-b0bc-f9424a9aee0d/dinojoregofexepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132c21ad-669a-4825-b011-2e97a4b32a6b/1437945728.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbb96fdb-5889-4cfd-b96e-bce09450d37f/92973016037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/432561b3-c40b-4464-bb74-5ed97604a7d8/3202849687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/747fe597-f738-4f44-b119-47c229edd1ee/89468435080.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/navusavixedilipubilolibud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d58cab-583e-4980-b0b0-9758af7e0aea/41660178655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b1d55c-9e68-4601-8e6b-fc28c50b5614/yal_adam_ve_deniz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F26 4972 bytes
SHA-256: 2e3c7d735ae8d23b1ed84013057e7cad8886fd1ef66521b41c08dc7850eca359
font_01_sfnt_off0001b004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B004 11172 bytes
SHA-256: c5a93b49e7c5b06522da0893e67b3675dfd0b23c6189b7d5d0309c1cbcb19caa
font_02_sfnt_off0001d58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D58B 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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