Malicious PDF — malware analysis report

Static analysis result for SHA-256 c826c0a5d5f43301…

MALICIOUS

PDF

75.4 KB Created: 2021-03-10 01:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c8a321d9a9d23930b99c6b5db3dd6ea8 SHA-1: 178bfcc77df65a5e3c411a375c30299b06dc3f14 SHA-256: c826c0a5d5f433014cffe7ec69b07888eb156acfc3b8d79a1ba6a6343cd0dcfd
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL points to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, contains references to '1080p 60fps video free', suggesting a lure for potentially desirable content.

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://jumiwimov.ru/123?utm_term=1080p+60fps+video++free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377938/normal_5fe4378f6cf80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_600a285a4f1bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495849/normal_5ff363e778537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_6019bace3c043.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/KE3Ihcr/tasuridenapesokogex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489601/normal_60340f9025e8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427076/normal_60062a8ea1678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369919/normal_600752782f154.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426972/normal_5fef19febe1a8.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/fURBxBt/pujapexojutevufexudato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460968/normal_600414bb7b02e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477401/normal_5fe380e002f2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463272/normal_6003a581d5ea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_5fd7c21d5e982.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_603fd5424671b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424662/normal_5fc7105f17c87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_5fe84eb24a405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403273/normal_603016db65542.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/8bf82353-5106-49b8-8003-34fc5571a63a/how_to_make_a_good_imovie_trailer_on_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0864aa3d-2fb3-434b-bb72-93d5d7876082/pufurubol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c644b5-5d05-4ede-aafd-65f7b028265c/sepexiwajowerepis.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_off0000e825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE825 5300 bytes
SHA-256: 4bc3b101f31a28747393604ba83946a8b4775aebb71083308326d37c7b23aa45
font_01_sfnt_off0000fa4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 11176 bytes
SHA-256: d921c4db2dbb3a0656269080ef03e796917d7d331566a780c7e78ce7624eafa4

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