Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e5e24dcd4ea01e…

MALICIOUS

PDF

74.7 KB Created: 2021-02-15 02:23:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0384bbae089d0b304535d9f1c9f2b393 SHA-1: 24b1f624552a83d91832a4bcfbd25211bdefa76c SHA-256: f4e5e24dcd4ea01ea964770484a5e6a554063902a4b2b94d58924e2390b5846f
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or deliver a second-stage payload. The document body, though heavily obfuscated, contains keywords suggesting a lure related to 'the hiram key'.

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://druttle.ru/wix?keyword=the+hiram+key+pdf
    • http://lianhua.life/43368782712ghfrv.pdf
    • http://austritkfa.com/magnus_the_red_8th_edition_datasheet3lr05.pdf
    • http://help-feedback-amzn6.xyz/alfa_cetoanalogos_de_aminoacidos5su40.pdf
    • http://reabook.online/bifilisekidakifoyhtj3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lixisariwulo/gewolinevibavumosizo.pdf
    • https://s3.amazonaws.com/timeziso/ultraviewer_5._1.pdf
    • https://s3.amazonaws.com/zesotat/minurozejevupubipunowajif.pdf
    • https://s3.amazonaws.com/wexukufedepim/chip_and_dale_game_apk.pdf
    • https://s3.amazonaws.com/wetowuzuxit/bujedowaz.pdf
    • https://s3.amazonaws.com/gowupuzokowuxes/xodumesideragulo.pdf
    • https://s3.amazonaws.com/jofunozuzof/servicenow_email_client_template_script.pdf
    • https://s3.amazonaws.com/gezizefefififa/jobiwop.pdf
    • https://s3.amazonaws.com/begijufadi/11827164522.pdf
    • https://s3.amazonaws.com/megelugik/88964857930.pdf
    • https://s3.amazonaws.com/sobaketemu/13619684853.pdf
    • https://s3.amazonaws.com/jazamerijekufol/carestream_image_suite_software.pdf
    • https://s3.amazonaws.com/zeworibuzoza/password_google_sheets.pdf
    • https://s3.amazonaws.com/tuxutedi/puberaxapoxitibul.pdf
    • https://s3.amazonaws.com/bejokazemur/rent_agreement_termination_letter_format_word.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_off0000e925.bin
1337fac0ece9ee8df62e01cef26dc624944e6f53c1b25d13dd79df4dbdc08488		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE925 5184 bytes
font_01_sfnt_off0000faab.bin
761cd2a00543823845f9f56a9ad2dfaacaefd2b06a2d14967af21a97f6ef7e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAB 10328 bytes

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