Malicious PDF — malware analysis report

Static analysis result for SHA-256 4426df20d751d9e2…

MALICIOUS

PDF

75.2 KB Created: 2021-03-01 21:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc1a5a668a835ccacb2f4aae1bc1ef38 SHA-1: 9a2007cda0608c789a063784c74c9b770d0fa691 SHA-256: 4426df20d751d9e2575da92c733349fae004a5c6555de068d5873ed751ac5088
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/aws?utm_term=how+to+make+a+second+order+knowledge+question', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a knowledge question, aligning with phishing tactics.

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://lozipotod.ru/aws?utm_term=how+to+make+a+second+order+knowledge+question
    • https://cdn.sqhk.co/wemopizajazo/b8igdxQ/kutapewokadokilatud.pdf
    • https://cdn.sqhk.co/jopubelo/dpgejdh/promised_lands_bellingen_directions.pdf
    • https://static.s123-cdn-static.com/uploads/4465705/normal_5fce0116860c9.pdf
    • https://cdn.sqhk.co/tusadopovet/yjdibQy/parler_posts_examples.pdf
    • https://cdn.sqhk.co/navotezive/igjhOih/27185325019.pdf
    • http://kifejuja.medianewsonline.com/speed_equation_calculus.pdf
    • http://goladelexugezi.sportsontheweb.net/xawibaso.pdf
    • https://cdn-cms.f-static.net/uploads/4479237/normal_601a9c6d96a05.pdf
    • https://cdn.sqhk.co/dagosasojo/jjihbie/44930576811.pdf
    • https://cdn-cms.f-static.net/uploads/4446765/normal_602bafa9291fd.pdf
    • http://gedadekenoz.mywebcommunity.org/pengertian_adt_android_development_tools.pdf
    • https://cdn.sqhk.co/gutifusuf/tgggfge/bugizupawutebunawibefuz.pdf
    • https://cdn.sqhk.co/wofosinewok/hagcNih/pdf_document_translator_app_download.pdf
    • http://xivoxuvawet.iblogger.org/beyblade_burst_evolution_episode_17.pdf
    • http://raxejudesezix.scienceontheweb.net/numowuwo.pdf
    • http://fesuzeroba.iblogger.org/difetewaworuxeranafaz.pdf
    • https://cdn.sqhk.co/fexejikexew/YLshVgZ/4182654579.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/putelekireza/kentucky_drivers_license_written_test_study_guide.pdf
    • http://wejufutaz.onlinewebshop.net/zunafomutesagojagoxebe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db28.bin
25d58d22e78a66ae064666506537e6169b0065e67895bad3e98297fd36491d56
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB28 5384 bytes
font_01_sfnt_off0000ed5d.bin
5288a1b7d6e97fb6088af6957725bb41c7239aa69d5ff9a2d8ddcbeffaa0913b
pdf-font-stream PDF embedded font (sfnt) at offset 0xED5D 10468 bytes
font_02_sfnt_off000110fc.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x110FC 4324 bytes