Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f9d6fa650d8993…

MALICIOUS

PDF

84.3 KB Created: 2021-03-20 22:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69a41c349bd9fd1a4bf24e3ac64f7a15 SHA-1: 4ad7e35f40ca17f0dbc37d141a60ddc243bfa100 SHA-256: e5f9d6fa650d8993819c252a3f30d250c1c712546cd43b3a7f271aefcd027098
116 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the presence of external URIs suggests the document may attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://leonvi.ru/wix?keyword=rotorazer+2020+blades
    • https://cdn.sqhk.co/nimabugokofa/imiicY1/lanedofesege.pdf
    • http://refazali.mygamesonline.org/matewiselajeso.pdf
    • https://cdn.sqhk.co/nugopanage/d7KsAhg/north_star_high_school_staff.pdf
    • http://jolijivik.scienceontheweb.net/buzedinuzorasetesizotu.pdf
    • http://javaxirivibewi.mygamesonline.org/14393366650.pdf
    • https://cdn.sqhk.co/zurefaxenov/hcxhhjb/getijovememuvutewojevin.pdf
    • http://joxezorov.mywebcommunity.org/bula_alprazolam_1mg.pdf
    • https://cdn.sqhk.co/gatezoru/fgcjjxj/scanner_diagnostico_automotivo_elm327_obd2_bluetooth_mini_azul.pdf
    • http://tojuvapemupo.mywebcommunity.org/inheritance_paolini_review.pdf
    • http://toluvubub.mygamesonline.org/analgsicos_opioides.pdf
    • http://sefesipodaj.22web.org/pegefumovu.pdf
    • http://dorulezebum.sportsontheweb.net/66086853787.pdf
    • http://duwinijuj.mypressonline.com/gudumazimezup.pdf
    • http://bikejesoxatelo.mygamesonline.org/jandy_3_way_pool_valve_parts.pdf
    • http://nakodinita.scienceontheweb.net/tlcharger_bescherelle_exercices_et_dictes_gratuit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ravuxudibure/behringer_x32_producer_owners_manual.pdf
    • http://rimuvuvipimube.epizy.com/toronto_alexithymia_scale_tas-_20.pdf
    • http://keregimuw.onlinewebshop.net/estudios_biblicos_para_jovenes_cristianos_bautistas.pdf
    • http://vamavaremimot.atwebpages.com/jenn_air_double_wall_oven_installation_manual.pdf
    • https://s3.amazonaws.com/legenapi/mtb_cycle_games.pdf
    • http://bawokexumavi.epizy.com/how_to_fix_a_leaking_washing_machine_hose.pdf
    • https://s3.amazonaws.com/patilawasu/lee_county_florida_school_schedule.pdf
    • https://s3.amazonaws.com/lovomijelun/fire_emergency_drill_report.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_off00010b13.bin
b41f2b6cf2fd8f7c1e3b91d9e4a84208a265845d3ed11f79d0b3c120ba388a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B13 5288 bytes
font_01_sfnt_off00011d19.bin
8db4ac5bc9e2628b9785abfde1015e72248c2139117ddff0f0332f3ba19aae3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D19 11552 bytes

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