Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97760129c66ad2e…

MALICIOUS

PDF

131.0 KB Created: 2021-03-07 04:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 883170433639213fcf6bf26250b5ef3d SHA-1: e2a173bf7cb28eba724dbc432b897355dcf12e44 SHA-256: d97760129c66ad2e69089c3268a2ee3ac6a5d57c2d5799cf026d3566dea8c894
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, 'midufefew.ru', which is likely used to host phishing content or download further malicious payloads. The document body is heavily obfuscated, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://midufefew.ru/award?keyword=how+long+is+the+extended+return+of+the+king
    • http://fiwisud.getenjoyment.net/tukurawibalo.pdf
    • https://cdn.sqhk.co/pulazapusaw/nYmgjhd/fun_race_3d_cool_math_games.pdf
    • http://lnstagram-blue-ticks.com/kafuxigulapiderematusizm0b.pdf
    • https://cdn.sqhk.co/kunimanujage/hahihbm/best_rally_driving_game_ps4.pdf
    • https://cdn.sqhk.co/sewuvavimebi/hdhdbgd/87511164156.pdf
    • http://relibafogat.sportsontheweb.net/what_is_new_in_iso_9001_version_2015_standard.pdf
    • http://lexanizisujufum.66ghz.com/cpted_design_guidelines.pdf
    • http://nukuxarigikuxez.iblogger.org/rapaxe.pdf
    • https://cdn.sqhk.co/xeposetuge/eA1iehj/light_bike_flying_stunt_racing_simulator_cockpit.pdf
    • http://zolepop.mypressonline.com/princess_diaries_3_movie.pdf
    • https://cdn.sqhk.co/tirabipati/7Ejalgh/smash_champs_mod_apk_obb.pdf
    • http://dietnatur.fun/692250171604hz8a.pdf
    • http://kamaz-ftc.com/2001_arctic_cat_500_4x4_repair_manualq25dr.pdf
    • http://magexaxajatadog.getenjoyment.net/what_are_the_interview_questions_for_computer_science.pdf
    • http://vixerixobo.22web.org/baidu_browser_with_button_er_free.pdf
    • http://boost-store.net/wipodexijunilu0iq0e.pdf
    • https://cdn.sqhk.co/wularumijif/gi9AhfK/10431535428.pdf
    • http://vinograd.io/baby_toilet_trainer4uk65.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gidibesuxi/lagu_dangdut_balungan_kere.pdf
    • https://s3.amazonaws.com/xunilukegez/autel_maxidas_ds708_manual.pdf
    • http://xasupanijit.epizy.com/why_is_time_management_important_to_students.pdf
    • https://s3.amazonaws.com/wupuxus/39315845501.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bef2.bin
e86014870c6b1fbf5ee62b8f228ceed72a9bbd3c43904de07c275f4a329eb0f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEF2 5024 bytes
font_01_sfnt_off0001d016.bin
63cb082bda4e2e25f395d0acfc3c42927988b4bb6d1e31429e24197cb4afaaca
pdf-font-stream PDF embedded font (sfnt) at offset 0x1D016 10704 bytes
font_02_sfnt_off0001f4ad.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F4AD 4324 bytes