Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f20eba0614eb32…

MALICIOUS

PDF

71.9 KB Created: 2021-05-16 17:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8f1669603653346c16bc3aba7380807a SHA-1: b62fbb84b003d0079f36bc7bee79e82d4c56e479 SHA-256: 58f20eba0614eb328f907e6baa263bae0be1c6d91f4354659c5ba929a27c38ba
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, indicating a phishing or trojan payload. It contains an embedded URL 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 US Army ranks and symbols, aiming to trick the user into clicking the malicious link.

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://mezovuduw.ru/strik?utm_term=united+states+army+ranks+and+symbols PDF link annotation
    • https://cdn.sqhk.co/kokademesuz/hcdhbhj/79748352866.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/KhgljdG/espn_fantasy_tiebreaker_playoffs.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesavif/hjzjfCW/potezawajimezajinejiwud.pdfIn PDF document text
    • https://cdn.sqhk.co/zamepeja/hghhVfQ/77361963182.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/ihdhigd/union_rustic_simonne_modern_sofa_bed_sleeper.pdfIn PDF document text
    • http://testrun.ru/3290372999vb2oy.pdfIn PDF document text
    • http://itsamorem.com/who_invented_order_of_operations_in_mathe5hfk.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/cU65Fir/music_video_maker_with_fx_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jerowerar/WgyYqjc/viticulture_essential_edition_vs_tuscany.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/Vhgd4YO/rowajugusojet.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/argjhAl/vdv_match_3_rpg_zombies_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7764c2-5db4-4e0b-9770-8935370323da/25491973334.pdfIn PDF document text
    • http://nupopejif.epizy.com/bauhn_wireless_headphones_aldi_manual.pdfIn PDF document text
    • http://tiwinifo.epizy.com/bloons_td_battles_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59df8792-818e-40f0-9742-24f62c99bac5/is_bbg_on_the_sweat_app.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_off0000db7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7A 5268 bytes
SHA-256: fb59f9cb496f7395aafacbbd8f121c7a8c7cf8ca6785082de3250a9c70588329
font_01_sfnt_off0000ed59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED59 10924 bytes
SHA-256: 5f66cd6746e08aeeca561028624efd1246a978540fc9c49c5f28befd0457c100