Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06959fe86c728d8…

MALICIOUS

PDF

74.8 KB Created: 2021-04-26 21:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42602776aaa2f428b3b8df0a0054f89d SHA-1: 14ba30aafa206d18c463beb14e0cd2a5628828aa SHA-256: d06959fe86c728d8fffcc9f0477fc4cf8c9252900598b672bebcf4cf85178450
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by both heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to relate to pellet stove parts, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections indicate a high likelihood of malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=quadrafire+castile+pellet+stove+parts
    • https://cdn.sqhk.co/xedomobedusi/eihjhhe/police_car_racing_simulator_traffic_shooting_game.pdf
    • http://zanupolema.iblogger.org/lozadovebonogovazivisike.pdf
    • https://cdn.sqhk.co/resilano/ighdWkc/64842796257.pdf
    • http://bokukot.22web.org/crtp_recurring_template_pattern.pdf
    • https://cdn-cms.f-static.net/uploads/4455659/normal_605ae70497208.pdf
    • https://static.s123-cdn-static.com/uploads/4478716/normal_5fdc98e0abf34.pdf
    • http://miworusak.iblogger.org/voputolatogapora.pdf
    • https://cdn-cms.f-static.net/uploads/4449789/normal_6019c692be76d.pdf
    • https://cdn.sqhk.co/jogekiluse/IjfKrX7/lowakorava.pdf
    • https://cdn-cms.f-static.net/uploads/4491670/normal_601fa8c460ac6.pdf
    • https://cdn-cms.f-static.net/uploads/4467589/normal_600f82401a6d7.pdf
    • http://zuwigef.22web.org/14690271184.pdf
    • http://xugerovogubex.22web.org/debuxufojakikenesore.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_aca483892d934775ba16ff070003f256.pdf?index=true
    • https://2a1457bb-a4d2-449b-8914-d784a503a6da.filesusr.com/ugd/c0fca2_fdc5d493538541f393b5be1d85fbd1f2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/840ff449-bc14-48d5-9961-6932ff038009/19344681818.pdf
    • https://73ea35ec-f0b0-4773-8bcb-d62b778c7de8.filesusr.com/ugd/a8e976_0a6ba590b66b4b3c8c90632bc0f9f60c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f4afc88f-9885-4c91-ba62-441c6979520b/how_to_get_a_free_rascal_scooter.pdf
    • https://uploads.strikinglycdn.com/files/7fec8b6c-e4ab-4785-987d-bbc55f115735/puzusazilomitotaxopo.pdf
    • http://xoxuvenopojox.rf.gd/what_is_war_horse_called.pdf
    • http://wemazepiba.epizy.com/wow_classic_warlock_mount_guide.pdf
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_1f098a2eda51430c9a469bf16ac2ecb5.pdf?index=true
    • 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_off0000e6ce.bin
778879ed443e4c4998502ae729fa2a7a8cd13f099dcca223a0b0a4ba3705ff3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CE 5268 bytes
font_01_sfnt_off0000f8d2.bin
526afd091a85151418ec9eff5e8bf5561b76975a0c3e56571aa81a51d111541d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 10796 bytes

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