Malicious PDF — malware analysis report

Static analysis result for SHA-256 351f3286ee4146fc…

MALICIOUS

PDF

74.4 KB Created: 2021-02-28 11:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33bb8e5bceba4444bbeefcb2ebab4e6b SHA-1: 24d3f0f27e3a9ccd20b4fff49a8a2b603c9379eb SHA-256: 351f3286ee4146fca614a16706a349f8a675502863e8843161a9a75e017d815c
136 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as 'Pdf.Phishing.Trojan'. The presence of an external URI pointing to 'xezojetit.ru' suggests an attempt to download further malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be instructing the user to open a password-protected archive, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xezojetit.ru/wix?keyword=thomas+oatley+international+political+economy+pdf
    • https://cdn.sqhk.co/purorenutuw/agghaoU/nigilafefomawipo.pdf
    • http://robinmani.site/pokemon_battle_games_free_for_mobilecxwpr.pdf
    • http://classkaod.ru/what_is_the_difference_between_enthalpy_of_atomisation_and_bond_dissociation0kxla.pdf
    • http://roskycnmx.com/853921115204dubf.pdf
    • http://tafagejiveduda.22web.org/2013_buick_enclave_owner_s_manual.pdf
    • http://luxshop21.site/kid_rock_songs_youtube_all_summer_long6d799.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vovajixavago.epizy.com/31740030881.pdf
    • http://fazemiwasagi.epizy.com/avery_templates_labels_8160.pdf
    • https://s3.amazonaws.com/fejatepudopito/aquos_80_inch_tv_manual.pdf
    • http://fozubogedunok.rf.gd/brawl_stars_pc_supercell.pdf
    • http://muxolisakij.epizy.com/mixed_addition_and_subtraction_within_20_worksheets.pdf
    • https://s3.amazonaws.com/gumagabu/robot_coupe_r2_dice_parts_manual.pdf
    • https://s3.amazonaws.com/wujafivabipo/gezobuteriwexebatovaseg.pdf
    • http://gufobipadu.epizy.com/31608641085.pdf
    • http://xidixisugatifes.epizy.com/leworej.pdf
    • http://rozizibuno.epizy.com/adaraya_agamaki_official_video_mp4.pdf
    • http://zaxilofekuji.epizy.com/basic_mathematics_statistics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddd7.bin
5fccc4b93669808a911be510fa35354615011d06cae0a9a774c0ef2e9a75b465
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD7 2828 bytes
font_01_sfnt_off0000e7e1.bin
0791e757e3b78a6d659050940e7edcfd8871b2587574f1cbaba90e3ec77bf58e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E1 5444 bytes
font_02_sfnt_off0000fa3c.bin
e3eb00f844c93de46cd1941adeb70140ee97400e801d6f0d6b8f1bfd648ae3c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3C 9836 bytes