Malicious PDF — malware analysis report

Static analysis result for SHA-256 8138c3e290681044…

MALICIOUS

PDF

77.0 KB Created: 2021-03-03 13:22:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a0a304f00e1b291eeecf007f7dab05 SHA-1: 63c806ace01bb15d0bfb9350cb3c00adc9dc64f7 SHA-256: 8138c3e2906810443175ce0856c8f9c5f5926735be883a18df6cbe82f2e30349
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 malicious domain, likely intended to deliver a phishing or malware payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to technical support or device setup, aligning with phishing tactics.

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://pelibifir.ru/123?utm_term=how+to+connect+dell+wireless+mouse+to+lenovo+laptop
    • http://punavuvipufov.sportsontheweb.net/wahl_hair_clipper_guide_comb_12.pdf
    • http://texoraw.sportsontheweb.net/what_is_taco_bells_new_5_box.pdf
    • http://kadabafomelu.66ghz.com/altaf_raja_ke_video_gane.pdf
    • https://cdn.sqhk.co/nowovadizeb/jfXMjb1/gifuxezugobupabilarexo.pdf
    • https://cdn.sqhk.co/peluxisomex/B15ibgc/26222518739.pdf
    • http://goxosegeratis.22web.org/22091178417.pdf
    • https://cdn-cms.f-static.net/uploads/4477373/normal_6027337a6362c.pdf
    • https://cdn.sqhk.co/fudopalizew/ghxgRia/talotisujilenebo.pdf
    • https://cdn-cms.f-static.net/uploads/4420761/normal_5fd8b6b6597d1.pdf
    • https://cdn-cms.f-static.net/uploads/4454973/normal_6023a711ced90.pdf
    • https://cdn.sqhk.co/firavibaw/am01mWE/wyze_cam_pan_mounting_kit_home_depot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://widifusi.myartsonline.com/15659526593.pdf
    • http://nopugorib.onlinewebshop.net/zikofube.pdf
    • http://dinedolorexos.rf.gd/play_store_chrome_android.pdf
    • http://xoxadexol.rf.gd/malden_mills_split_king_polar_fleece_sheets.pdf
    • http://zijiwaras.onlinewebshop.net/gaduninazuvazez.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_off0000ed58.bin
2f1f973221d3a378168917d63231305ffa0518c74f3ae48d57c34f6973eac762		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED58 5332 bytes
font_01_sfnt_off0000ff78.bin
e541583a3a5dc4a50c4f6f8d612c2424b25900cb62869df82d9a3cd9645ec5ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF78 11736 bytes

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