Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e74a647d66526e…

MALICIOUS

PDF

66.3 KB Created: 2020-12-31 13:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5d2d668cf20287869db2a609ad78cd94 SHA-1: 751fd548a6c4e37d4000d2d38ed487283561b85a SHA-256: c8e74a647d66526e546515b007856992b932caf7feef9044466341fa1e329211
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=ffxiv+fox+ears+mod', which is likely a phishing lure. The document body, though heavily obfuscated, contains text related to 'ffxiv fox ears mod', suggesting a social engineering pretext to drive traffic to the malicious URL.

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://trafficel.ru/123?utm_term=ffxiv+fox+ears+mod PDF link annotation
    • https://lefasibemaji.weebly.com/uploads/1/3/4/5/134589759/datudiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f88d9ba37880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366020/normal_5fc3b45f4cd0b.pdfIn PDF document text
    • https://sixifemawo.weebly.com/uploads/1/3/4/4/134470876/ae3b6e5e4e92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5fe70f6507d17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446273/normal_5fb2d714eb7e4.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/latavupefiso-xumexeromawaniw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jonora/66194021382.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/nakudesexito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fc46236-b8f9-4b0d-bc97-d5d25bb283cd/poptropica_shrink_ray_island.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/tapuvikedekajodedidol.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/kaxutado.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/bnf_notation_in_compiler_design.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/spiritual_meaning_of_names.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/98337303891.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_off0000c712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC712 5104 bytes
SHA-256: c113c25e5f228c0164741cea0370c02f087416463a9ba0d1fc7f20fd64feec49
font_01_sfnt_off0000d866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD866 10624 bytes
SHA-256: 21729b5ec9417460ec5c813cc53264e230f89434075a38077cfa76d70033ff56

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