Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e81744bdf27fca…

MALICIOUS

PDF

106.0 KB Created: 2021-05-20 03:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae67abfa59e584ff564dca6a5aa47dc4 SHA-1: dfb71393b6aacfb915a3b3112c296f4ba1a23cc5 SHA-256: 01e81744bdf27fcad5eb1aaea20ae70efe1b4434268d0289490b2b88492b715b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended to phish or deliver a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a garbled attempt to mimic search result content, further supporting a phishing or redirection attack.

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
  • 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://jacksth.ru/strik?utm_term=does+murtagh+die+in+eragon
    • https://static.s123-cdn-static.com/uploads/4471095/normal_5ff05e34dd9c6.pdf
    • https://cdn-cms.f-static.net/uploads/4464529/normal_605d2ffa1d4ea.pdf
    • https://cdn-cms.f-static.net/uploads/4467287/normal_60450d1b26f07.pdf
    • https://cdn-cms.f-static.net/uploads/4419193/normal_5fd721f572fdf.pdf
    • https://cdn-cms.f-static.net/uploads/4370547/normal_604ac778ec3c7.pdf
    • https://cdn-cms.f-static.net/uploads/4365542/normal_603a79a76a6a3.pdf
    • https://static.s123-cdn-static.com/uploads/4499999/normal_600256db8542e.pdf
    • https://static.s123-cdn-static.com/uploads/4409405/normal_5fc9504f40b1f.pdf
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5ff15d6032b0d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d6286d54-05d6-4185-95ca-18da596430a9/graco_swing_broke.pdf
    • https://uploads.strikinglycdn.com/files/c7174755-16c3-470d-86b2-654bc89c96cd/compound_adjectives_hyphen_worksheet_grade_4.pdf
    • https://s3.amazonaws.com/dosipive/attack_on_titan_anime_movie_1_stream.pdf
    • https://uploads.strikinglycdn.com/files/26e799b8-a19b-4bfb-aab1-d4e2ee253ba6/what_is_todays_julian_date_for_military.pdf
    • https://s3.amazonaws.com/naxozelozude/how_high_to_mount_a_55_inch_tv_on_the_wall.pdf
    • https://uploads.strikinglycdn.com/files/a13741ba-51cd-4b41-a846-3075fe11fa75/maven_online_quiz_tutorialspoint.pdf
    • https://uploads.strikinglycdn.com/files/419dd4cf-61cd-41a2-8bc5-1c479ff0437c/kubota_v1505_diesel_engine_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/5f046198-2630-4cde-82c5-c45e73d743c5/can_i_use_my_echo_as_a_tv_speaker.pdf
    • https://s3.amazonaws.com/bejexe/korovitebiguvozak.pdf
    • https://uploads.strikinglycdn.com/files/bf79a27e-8b5f-4025-958d-3fd085300fab/call_keeps_stopping_samsung_j7_crown.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016260.bin
1e9dd45e382f8dd6848dc5ccee5de787105e289ba71d205c20ec52601a908820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16260 5204 bytes
font_01_sfnt_off000173e7.bin
8134ff74ca04354f4c3b2027f26b9a8de59a0d68ebe7126be50dba525326d6ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x173E7 11428 bytes

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