Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f372f6c7e20b4c…

MALICIOUS

PDF

79.5 KB Created: 2021-02-20 01:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: be4ff2c146c15d56b3bfb3ee24bafbd2 SHA-1: 942caac556b6e2962c70a83620e1004c97a631b5 SHA-256: b6f372f6c7e20b4c7417f62fd2949e67a5be5983fbff082a1d95b4d3ddfd13e1
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 a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to games or entertainment, consistent 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://bologen.ru/wix?keyword=battle+swat+vs+mercenary+mousebreaker PDF link annotation
    • http://strahuemsya.info/fivuzibevunerapakiduva0k38s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496607/normal_6021c9013cb71.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/Qwfahe9/recargar_diamantes_free_fire.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/xhbp1A7/rpg_for_destiny.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_600a4fa9355ab.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/hjUGlhf/liwarikojum.pdfIn PDF document text
    • http://studyweb.site/agatha_christie_poirot_clocks_castgshjm.pdfIn PDF document text
    • http://umniashka.ru/burger_king_coupons_juli_20206ijh0.pdfIn PDF document text
    • https://cdn.sqhk.co/fegozanodedu/OrAhhAn/old_fashioned_toy_snake.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_60295d7e9ed29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/38306092341.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/free_website_templates_html_css_javascript.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/baahubali_hd_tamil_movie_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/math_worksheets_for_grade_7_simple_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/foserones.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/zomoporadexaxakajubevedu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 5452 bytes
SHA-256: ffc58c5e75b6fd416588dc917a3d9eff1c500b5a4dfed7571dfd3007171ffef8
font_01_sfnt_off0000f02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02D 8476 bytes
SHA-256: 5799272aa9f887c747fe1f00b5eef38c75668568798b782712ad07111d7d5e35
font_02_sfnt_off00010bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB7 9832 bytes
SHA-256: ab7f9082aeda5584ed63381d81aeba3be4540fbb059ca559dab48897e25280b1

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