Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e7e8a12246214c…

MALICIOUS

PDF

76.0 KB Created: 2021-04-02 12:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf46911948cf87b850ecc8b1f40e08b7 SHA-1: a8db34ab7c9eed8bad69bbe5492f5a7e7c42bb67 SHA-256: f6e7e8a12246214c410a886f705c5b1c26bf8c5ff094d1a468322b83f824a348
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The embedded URL points to a suspicious domain, likely serving as a lure for the user to download further malicious content. The document body, though heavily obfuscated, contains references to 'The naked trader pdf', suggesting a pretext for the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=the+naked+trader+pdf
    • https://cdn-cms.f-static.net/uploads/4446168/normal_5fda7540ef95d.pdf
    • http://dumovabitoda.22web.org/54108391280.pdf
    • https://cdn-cms.f-static.net/uploads/4476270/normal_5fe8338dabe03.pdf
    • http://daliadiago.com/chunkzz_songs_malayalamvfq0a.pdf
    • http://dalilexusafa.22web.org/65264789060.pdf
    • http://reactivaperu-2020.com/noxutilapitekilebumewifxlv3.pdf
    • https://static.s123-cdn-static.com/uploads/4481993/normal_5ff4b9ec935a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/66934343-b37e-4e43-b86d-73cf4f0ffa7e/mekowuzivogiraxevunezipi.pdf
    • https://uploads.strikinglycdn.com/files/33d9fee3-2bd2-4890-8f0f-322eed1921ec/7028301680.pdf
    • http://sobofepexenux.epizy.com/dell_gx620_drivers_windows_xp.pdf
    • http://dazulenaredon.rf.gd/my_application_form_at_unisa.pdf
    • https://uploads.strikinglycdn.com/files/ba466965-f223-45ae-a233-960551297737/delonghi_magnifica_s_coffee_machine.pdf
    • https://s3.amazonaws.com/zonivezada/76780353729.pdf
    • http://xibubixina.epizy.com/oxford_collocation.pdf
    • http://nawonuzegajosi.epizy.com/blizzard_slow_speed.pdf
    • http://sovuberexizizir.epizy.com/bevirivuvuxinibizazod.pdf
    • https://uploads.strikinglycdn.com/files/bd4a7e05-98c8-46ba-a0b0-cb31d5dcaee7/sims_3_macbook_pro_unknown_error_occurred.pdf
    • https://s3.amazonaws.com/libowebujakux/dofofetuso.pdf
    • https://uploads.strikinglycdn.com/files/d715ac24-29cf-42fe-bf99-108beed4e2b7/21911063236.pdf
    • http://fujuresaw.epizy.com/fobudevorujuz.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_off0000ec80.bin
7f0d4d083850918443e97a24a33b2b914eddc083b2010deb36cda58668795d3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC80 4932 bytes
font_01_sfnt_off0000fd3f.bin
cb2616c38fbcfb4d7dbeb90f1497ba5c43a395d99d570c5b0254e14b1537631c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3F 10992 bytes