Malicious PDF — malware analysis report

Static analysis result for SHA-256 8282fd13f72ce4d8…

MALICIOUS

PDF

73.9 KB Created: 2021-03-18 09:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640cbba4ccc02f87edfcb1e0a3002731 SHA-1: b65c1aef706b6ea15ead145e432b8fb755fdb80d SHA-256: 8282fd13f72ce4d858bf904f30ca2f8eb1e4ca16af0809031077e16abdace889
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, specifically flagged as a phishing trojan. It contains an external URI pointing to 'lozipotod.ru', which is likely part of the malicious infrastructure. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alphabet+flash+cards+pdf+free
    • http://jurojegame.getenjoyment.net/ignou_b._ed_entrance_syllabus.pdf
    • https://cdn.sqhk.co/javufikari/lgJ0ASB/jawix.pdf
    • http://diwolekeku.22web.org/teds_garage_dinner_menu.pdf
    • https://cdn.sqhk.co/tiviluluje/pjddFN9/mod_pixelmon_minecraft_beta.pdf
    • https://zezefikopupom.weebly.com/uploads/1/3/4/6/134686460/fimuzoju.pdf
    • https://cdn.sqhk.co/bikulatitaxe/SjcRdjf/wujarivanuwofozede.pdf
    • https://xotozefubineru.weebly.com/uploads/1/3/4/5/134576546/putatuvejure-kikatetaxafidom-sisimimas.pdf
    • https://cdn.sqhk.co/viliwogid/XhGySjh/osrs_smoke_devil_slayer_guide.pdf
    • https://birugenok.weebly.com/uploads/1/3/4/6/134632973/xezimaj.pdf
    • http://setafugeridol.scienceontheweb.net/uud_1945_amandemen_1_2_3_4.pdf
    • http://mujoxoluvisukid.getenjoyment.net/motilukavuluxuvesanodo.pdf
    • https://cdn.sqhk.co/jenuluvonuz/uhaghWy/57545921259.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bufijonewufo.onlinewebshop.net/ethical_considerations_in_research_methodology.pdf
    • https://uploads.strikinglycdn.com/files/47271cd4-e701-4768-b67a-1072faa1d203/55040318477.pdf
    • https://uploads.strikinglycdn.com/files/b97d1b8d-5730-4038-a800-021a6ebc5745/fufiwidapaxipu.pdf
    • http://bumurulepowele.myartsonline.com/actores_de_la_pelicula_el_diario_de_greg.pdf
    • http://dabigox.rf.gd/benign_paroxysmal_positional_vertigo_bppv.pdf
    • https://uploads.strikinglycdn.com/files/b0d4aee0-b28d-43d1-8e88-f1bd79ab2125/38120511930.pdf
    • http://jezeladi.rf.gd/buttercream_flowers_tutorial.pdf
    • http://gevejonitu.onlinewebshop.net/what_does_it_mean_if_your_roku_remote_stops_working.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_off0000e5c7.bin
9fb7510239b271f03abdf9b81a77d4801fa32c3b81c4f75c7cae6df3915614c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 5372 bytes
font_01_sfnt_off0000f7fd.bin
a933eadac190c8055265e91baffe24643a00c10060fba4b9c5f01dfaa11ee207		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FD 10092 bytes

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