Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f2d7e9b5f78e79…

MALICIOUS

PDF

92.3 KB Created: 2021-03-14 16:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed54cc51300833206e28964641012e7c SHA-1: aee2bb2153d5db7f4e826ddb8af2f02d447170fc SHA-256: 66f2d7e9b5f78e792cd503bb3d08791bac688dd98ae8759aa552e909ac4f8459
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used for phishing or to serve a secondary payload. The document body, though heavily obfuscated, appears to be a lure related to a game, suggesting a targeted phishing 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://mezovuduw.ru/wix?keyword=ffxi+throwing+skill+up+guide
    • http://vugekowuzujed.scienceontheweb.net/kidamexufabuwewasilena.pdf
    • http://mebevevi.mywebcommunity.org/diablo_2_best_class_for_farming.pdf
    • https://cdn.sqhk.co/raxuzuvuluf/hid7pgf/drag_battle_apk.pdf
    • http://dajazadek.22web.org/wunogodowopila.pdf
    • https://cdn.sqhk.co/mezutowede/NIjjiiY/vonavabubuwebub.pdf
    • http://tiwovurof.iblogger.org/damotekefebomif.pdf
    • http://visunuduxat.mypressonline.com/62621396159.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/donukadizolin/why_does_my_transmission_leak_fluid.pdf
    • https://s3.amazonaws.com/lepefi/getting_started_rails_guide.pdf
    • https://s3.amazonaws.com/zafirawit/ks3_maths_multiplying_decimals_worksheets.pdf
    • http://fobupozomorefiw.epizy.com/mifev.pdf
    • http://xomawerowikevof.rf.gd/bizopa.pdf
    • http://tuvugerij.rf.gd/17058437607.pdf
    • http://lutetebov.rf.gd/symmetric_bilinear_form.pdf
    • http://duguzowosuli.epizy.com/81608594290.pdf
    • https://s3.amazonaws.com/wenobagupexekap/kulesawujajivo.pdf
    • http://tutivute.epizy.com/37836102004.pdf
    • https://s3.amazonaws.com/wujafivabipo/48018413257.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_off00012c4f.bin
25fdeb5946f810354569985d2349ef6c02fb34ab567a502edcbb103650086021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C4F 5272 bytes
font_01_sfnt_off00013e5c.bin
622f1a18ec10a0cd9f3949702abedcc66a1985ff3d1c89fcfed33714fc6b8bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5C 11160 bytes

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