Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd949d2559df58d3…

MALICIOUS

PDF

80.6 KB Created: 2021-02-15 11:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ea186b8024d3cc81463869258c1a1db5 SHA-1: 5952807cd3e99e072531c19accbdde98b441b478 SHA-256: fd949d2559df58d3da7c3f1d51546ab4051ed50b176395617f68af76ed359ef0
136 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains embedded URLs pointing to external sites, one of which is associated with downloading applications. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests the document may attempt to execute commands, potentially to download and run further payloads.

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jottigo.ru/wix?keyword=my+cafe+mod+apk+unlimited+coins+and+gems+vip+7 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470543/normal_601e6662812f4.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/gehdvjf/does_soap_increase_or_decrease_surface_tension.pdfIn PDF document text
    • https://cdn.sqhk.co/ketifoseja/hajhjjF/42363657041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413583/normal_5fe7236294c88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465394/normal_6005762169610.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/8igNXPL/vivid_seats_event_ticket_insurance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5ff9c5599d365.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/ArOiay2/taxutakifepebajojov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496170/normal_5fd90c5fd2b58.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/9Jmgjhj/jowusekarixavaguwobapelem.pdfIn PDF document text
    • https://cdn.sqhk.co/boxadiweteve/ihicmdW/rome_total_war_barbarian_invasion_mercenary_units.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/ihggIid/20280783444.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/0Dibuyh/56006951367.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/xafemepino/jfmp3hc/fan_of_guns_hack_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/jtehj4w/map_among_us_mod_apk_2020._6._9.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/UT2hjig/12431954261.pdfIn PDF document text
    • https://cdn.sqhk.co/zozotetowa/Owiigce/earn_to_die_1_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/wjicgij/my_german_shepherd_puppy_runs_sideways.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_5fd26c27651e1.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/YjeFK5s/90629838380.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 5688 bytes
SHA-256: b1946aea4cb12803fd9606b25efc522d4accb61bc888ce7bcf292cc1a463c537
font_01_sfnt_off000104a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A2 2272 bytes
SHA-256: d32edefb5400d4e988490dfe47e78d723eb74a0102be22490be0a8b408889b70
font_02_sfnt_off00010ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF5 10920 bytes
SHA-256: 6d5d5273cfc03c4767bb356f4476b052a2ae6eea436d97d4ed9b0c3590d543cc

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