Malicious PDF — malware analysis report

Static analysis result for SHA-256 81db59120cab3c53…

MALICIOUS

PDF

77.4 KB Created: 2021-04-01 19:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9226494b340735f6fd203bdc835b20bf SHA-1: d38c1b8e49c7588d3a397997a22046739cf47107 SHA-256: 81db59120cab3c53984e03e7b8c97523336b9d724d94edc832f0339b9c420abb
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing lure, potentially related to downloading a game mod. The presence of a download button heuristic further supports a phishing or scam attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=stormfall+saga+of+survival+mod+apk
    • https://cdn.sqhk.co/rojarimeg/5hhjchg/slither._io_cheats_2020.pdf
    • http://puvepum.getenjoyment.net/el_hijo_horacio_quiroga_analysis.pdf
    • https://cdn.sqhk.co/dafagupovo/Z3zX9gi/cabinet_dentaire_dent_de_lait_ixelles.pdf
    • http://xogunajeraxuda.mywebcommunity.org/cuisinart_dcc-3200_glass_carafe_handle_programmable.pdf
    • http://xizerunax.scienceontheweb.net/satekovaforawabas.pdf
    • https://cdn.sqhk.co/nejajevafode/Bknijhi/tulukudo.pdf
    • http://paruxezogu.mygamesonline.org/81902813179.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_69c15b22f5f74c3fa19c1b0f4317b331.pdf?index=true
    • https://s3.amazonaws.com/tofizo/wall_laminate_sheets_philippines.pdf
    • https://s3.amazonaws.com/jodabiladezot/belt_and_road_initiative_indonesia.pdf
    • http://kutoxinupuroxo.onlinewebshop.net/divinoxededepol.pdf
    • https://s3.amazonaws.com/pukiza/41942206765.pdf
    • http://kesuzidadubitik.rf.gd/barriers_to_effective_communication_essay.pdf
    • http://dujulekofolurad.rf.gd/50632214122.pdf
    • http://tapoloferazuziw.atwebpages.com/graco_x5_manual.pdf
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_7f22e33a8c0042a687558a272eda8837.pdf?index=true
    • http://pobevejilu.rf.gd/37941662907.pdf
    • https://e108c0fa-8e70-4110-aab7-e0d30777705f.filesusr.com/ugd/d9966b_03540b7012cf470083041f9167b68fb5.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_off0000ef60.bin
0a6bc34172baf24b71407bc3f2c28239dba02aae0fd33b41741e8e2c24565565
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF60 5588 bytes
font_01_sfnt_off00010254.bin
5eea94b2b28dfcb38fe2e3b17410d28b8327e76921cbb2c14ae5de77e11b7a07
pdf-font-stream PDF embedded font (sfnt) at offset 0x10254 11116 bytes