Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc25e2251a0051cd…

MALICIOUS

PDF

86.1 KB Created: 2021-04-04 10:56:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efda0a6a28e353594ed3c0ea2fdd59de SHA-1: 5137f3afd6592afa178df7af04fee874ce2e2c2f SHA-256: dc25e2251a0051cda8e91740b32a507bbe32ab0091a8d31083daffe53bb3acb7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though partially corrupted, suggests a lure related to game answers, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/wix?keyword=word+whizzle+card+games+answers
    • https://puwekuzegavezek.weebly.com/uploads/1/3/4/7/134734886/begabudaz.pdf
    • https://cdn.sqhk.co/wipabamof/cnY8BYL/stickman_warriors_super_shadow_fight_mod_apk.pdf
    • https://fusodozot.weebly.com/uploads/1/3/4/0/134096428/natakidutemaw.pdf
    • https://cdn.sqhk.co/jadosoxiko/fuhfjLJ/century_arms_ak_pistol_9mm.pdf
    • https://cdn.sqhk.co/lusimalifa/rgcwjhq/lighthouse_inn_rockport_damage.pdf
    • https://cdn.sqhk.co/murafabu/jhajbie/calculator_vault_app_hider_apk_uptodown.pdf
    • https://jabudebixeref.weebly.com/uploads/1/3/4/3/134398441/nomozovaposugi.pdf
    • https://felanixumuxovex.weebly.com/uploads/1/3/4/7/134705369/3a94eb99ab55.pdf
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/jotagezusazesa.pdf
    • http://instgramcopyrightdispute.com/what_is_pack_line_defenseqansj.pdf
    • http://buyfastedcircle.xyz/ruvesagebixaniohe29.pdf
    • https://dipediras.weebly.com/uploads/1/3/0/7/130739778/menijogajasuzo-pelabodilufux.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/farowug/66115545616.pdf
    • https://s3.amazonaws.com/vefagotoje/how_to_start_bosch_ecosense_dishwasher.pdf
    • https://s3.amazonaws.com/nilafafakem/toparokawizedibiteriporij.pdf
    • https://uploads.strikinglycdn.com/files/20d9c01d-b176-4682-aeea-ff88fafe5ac4/30686569732.pdf
    • https://uploads.strikinglycdn.com/files/c3d145bf-9304-4a33-adfb-ae0cb13a4e92/jbl_flip_2_manual_espaol.pdf
    • https://s3.amazonaws.com/dosalapasenow/iliad_book_14_line_201.pdf
    • https://uploads.strikinglycdn.com/files/b8ccb10c-eb6d-4196-b363-69bac515b2ff/earthquake_word_searches.pdf
    • https://uploads.strikinglycdn.com/files/4e391d97-9506-431f-9f56-a750592b8849/kexono.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_off00010752.bin
f42ee01047501238b36c3fe6fa2f5ef9ea3c275fd4cf595beae654fc79490da4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10752 5216 bytes
font_01_sfnt_off000118f8.bin
0f7443e244692edd4a847d2daa7fd2e79c5e4a9657e4bef0cdfb3b9b6aea1dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118F8 10580 bytes
font_02_sfnt_off00013d10.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D10 4324 bytes

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