Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a069dd70a32f6f…

MALICIOUS

PDF

76.3 KB Created: 2021-03-25 15:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 097b1906ad720a6548813aadba267b86 SHA-1: 18f8230501c7ab747f85b867ac0c6f7fb747caa1 SHA-256: d2a069dd70a32f6f4f41dbdadf824f300e127a6c373e65e3dfacfa2b78282e71
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or credential harvesting scheme. The document body, though heavily obfuscated, suggests a lure related to veterinary information, likely to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the ML detection strongly indicate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://druttle.ru/award?keyword=balanopostitis+en+bovinos+pdf
    • http://nomenowunesazoz.scienceontheweb.net/human_resource_management_functions_include_all_of_the_following_except.pdf
    • https://cdn.sqhk.co/vitimosugu/fjjieja/golofalewixim.pdf
    • https://cdn.sqhk.co/vadezewe/8hhigji/59219645839.pdf
    • http://kind-insta.site/yellow_colour_wallpaper_hd_free_downloadtye1a.pdf
    • http://wosozage.mypressonline.com/fujifilm_instax_mini_8_manual.pdf
    • http://remont-kholodilnikov.website/86508925733ux30r.pdf
    • http://twenty-promo2020.ru/nutrition_care_process_and_model_part_1_the_2008_updateqzw9g.pdf
    • https://cdn.sqhk.co/xataruzepape/d67Ihdl/hot_wheel_games_to_play_online.pdf
    • http://mikazuxo.mypressonline.com/fonagejibeko.pdf
    • https://cdn.sqhk.co/dudokirabog/xoVghji/26586332288.pdf
    • http://fajiriduxir.medianewsonline.com/jquery_ui_api_documentation.pdf
    • https://cdn.sqhk.co/raxedaninaso/cBEhcGV/debijudera.pdf
    • http://siwosupegejolop.medianewsonline.com/kiwarego.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f60c47dc-12c8-4064-8f41-cc4596016f49/how_to_enable_airprint_on_my_brother_printer.pdf
    • https://uploads.strikinglycdn.com/files/a9daa7cb-4b7b-4628-bd4e-c840f965ec74/how_to_write_a_closing_statement_for_a_speech.pdf
    • https://uploads.strikinglycdn.com/files/61f4a1ca-b514-4651-8030-ea8f8a1a3bb4/bugaboo_frog_seat_cover.pdf
    • https://uploads.strikinglycdn.com/files/33ade9d4-aaff-4fab-938c-0c62b5e81482/why_did_jason_grace_die_in_the_burning_maze.pdf
    • https://uploads.strikinglycdn.com/files/f27a968b-b7e7-4290-949c-943dfdc87f81/dell_optiplex_390_specs_i5.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f396.bin
822c945bfbcf7112ba29e6ed366759093fedfb185e0cb82e05b26718833ac1c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF396 5188 bytes
font_01_sfnt_off00010552.bin
6a19b74f629d97e13a85cf1d88f86cba617705b7c108770025bb4904d5e0ed13
pdf-font-stream PDF embedded font (sfnt) at offset 0x10552 11516 bytes