Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d23564210c258f2…

MALICIOUS

PDF

76.7 KB Created: 2021-04-12 02:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 889518b79b74d5f426d2ff0965aea55f SHA-1: 517170ba4a1cdc8f99111ad11b2c2d3b77c4e2e4 SHA-256: 7d23564210c258f2acb1f95ccc03deead3b71815208cbe23e5b8c8657379584d
96 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 a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'prayer book', indicating a social engineering attempt.

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://ponafet.ru/strik?utm_term=simple+daily+prayer+book
    • http://reduslim-officialsite.site/pathfinder_druid_archetype_guider7lnd.pdf
    • http://mumijivamivaxij.medianewsonline.com/types_of_analytical_balance.pdf
    • https://cdn.sqhk.co/wozejodes/iakNheH/discord_music_bot_groovy_commands.pdf
    • https://cdn.sqhk.co/litonesi/3AtF46D/panda_pop_update_2020.pdf
    • http://getporte.xyz/pikejafopuwejiferuxixibu9flbk.pdf
    • http://xevedudox.sportsontheweb.net/internet_and_java_programming_notes.pdf
    • http://feyakast.online/xopuzjby5z.pdf
    • https://cdn.sqhk.co/jagibuvat/b3B0gc1/65994621398.pdf
    • http://olx-delivery.cc/63823673024e0v6k.pdf
    • http://paypallsecurity.com/logitech_g700s_battery_coverkp60f.pdf
    • http://about-central.com/gmail_sign_up_new_account_login_mailp9vrr.pdf
    • http://wativeb.mypressonline.com/28902688634.pdf
    • https://cdn.sqhk.co/xonepogafix/Haig5ic/48534458145.pdf
    • http://form-lnstagramcopyrightservice.com/valuation_les_aires_cm2vmx7k.pdf
    • http://lotibamuzuti.scienceontheweb.net/80002108031.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_322d57edd67143a3a6a3510c79ca0917.pdf?index=true
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_92c1ccbd931147c395576b24001ee19a.pdf?index=true
    • http://nowageg.onlinewebshop.net/24452839885.pdf
    • http://rukosivujuxu.atwebpages.com/45943363837.pdf
    • http://kexomun.myartsonline.com/44586374889.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_off0000ef2a.bin
05183156d35861c80cbc36a73ab3db4267bd5b5da3e02c0b9f69c16d2c01bbd0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2A 5336 bytes
font_01_sfnt_off0001013a.bin
14613bab1011a829d401f2124eedc16ef6e21dd30831f08fd5feb18443c42596
pdf-font-stream PDF embedded font (sfnt) at offset 0x1013A 10540 bytes