Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0955bdf6e1771f…

MALICIOUS

PDF

83.3 KB Created: 2021-03-29 22:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0648fa8071f8a0157dfeae95ee9d8ce6 SHA-1: 2fb3ff8e5602e4e26c05808ab5199fdd7bd3461b SHA-256: de0955bdf6e1771fdb61f32e6735392ddbaef21f15efbc16a143cc8fe2e204ad
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'Hp post beep codes' to entice users to click 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://lozipotod.ru/aws?utm_term=hp+post+beep+codes+3+long+4+short
    • https://static.s123-cdn-static.com/uploads/4477369/normal_5fceee0d5b7c2.pdf
    • https://cdn.sqhk.co/vakolitakap/ihj4geb/zeregutuxoro.pdf
    • http://7lessons.space/sublimated_cheer_uniforms_australia3jw02.pdf
    • https://cdn.sqhk.co/gazegarov/hihI9I3/my_water_balance_apple_watch.pdf
    • https://static.s123-cdn-static.com/uploads/4366358/normal_5fd09a316e5da.pdf
    • http://vizionsmc.net/draft_london_plan_inspector_s_reportpmy35.pdf
    • https://cdn.sqhk.co/doxowite/egdihgg/escape_game_50_rooms_2_level_10_2019.pdf
    • http://mivifukatovaga.getenjoyment.net/autocad_mechanical_drawing_tutorial.pdf
    • https://cdn.sqhk.co/porosobof/gdibp16/prize_claw_apk_mod.pdf
    • https://cdn.sqhk.co/bivatesiromu/T9idgiS/video_editing_for_linux_free.pdf
    • http://vegofejolafud.mygamesonline.org/water_cycle_questions_worksheet_answer_key_7242.pdf
    • https://cdn.sqhk.co/rubekafux/jDhdEIs/free_offline_slot_machine_games_download.pdf
    • http://setafugeridol.scienceontheweb.net/habermas_public_sphere_theory.pdf
    • http://mebelrostov.ru/vajeponurelozireyjfy.pdf
    • https://cdn.sqhk.co/titesojijuko/ifcNhd8/15127648775.pdf
    • http://arevakar-travel.com/reliability_centered_maintenancer0fix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a98ec979-cdcf-4002-9d1f-3ef3dc84e85d/78227749552.pdf
    • https://uploads.strikinglycdn.com/files/e5a7667a-4665-4e82-b8a1-1fca1455a73f/34891892781.pdf
    • http://todiwefexoneb.atwebpages.com/gotapirofozigudinepif.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010651.bin
21ce41d4696d403e29cc687abd6b6635270d347d43e4d421a3aaaf9744355b62
pdf-font-stream PDF embedded font (sfnt) at offset 0x10651 5476 bytes
font_01_sfnt_off000118ea.bin
50a0ab73de92b754e30d05b46b752d8060596826541dde9142d885793c6936c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x118EA 11032 bytes