Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b174c24dd132cbd…

MALICIOUS

PDF

71.8 KB Created: 2021-03-27 11:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 791b105cbcaa43599885953f3e00f3c5 SHA-1: a98e6ce449e2cebb76d9e3dfdde18b0cb466895d SHA-256: 7b174c24dd132cbd27c043a75202143e7a035be9d3789796858b00cc95b8d6ce
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=john+wooden+pyramid+of+success+poster+pdf
    • http://itsamorem.com/54014533586csqpn.pdf
    • http://info-pages.ru/lajaliwexatovebaxuki81by.pdf
    • http://twitter-center.com/920236571552qgm5.pdf
    • http://becloud.website/dbr_auto_clicker_ios_downloadgqw1v.pdf
    • http://remontlegko.info/breeam_uk_new_construction_2018_technical_manualn6sbx.pdf
    • http://znakomstva18x.site/kanoxomunasadutifulaskgbh0.pdf
    • http://grizhoff.ru/wegibegabofalipodotuf1v9o4.pdf
    • https://zinuwikisabarek.weebly.com/uploads/1/3/4/6/134679236/409c4.pdf
    • http://websecurer.tech/who_are_the_actors_on_fresh_off_the_boato0tgp.pdf
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/gizevinasakuz8b0b8.pdf
    • https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/7898201.pdf
    • https://tadasika.weebly.com/uploads/1/3/4/6/134653914/a37519d3d.pdf
    • http://tameenegypt.com/reacciones_para_balancearh129l.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_1c8c86658e7c42c7b4c85e66b519c4c7.pdf?index=true
    • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_05e88c18529344a680a4bc86ab77b5c4.pdf?index=true
    • https://s3.amazonaws.com/jovekus/how_to_write_excuse_me_in_spanish.pdf
    • https://s3.amazonaws.com/baxunaf/dezalut.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_off0000d707.bin
7ecd6f5ae147855610d85ed0171408dc6ae831d1c86b536c6bf9263733e121dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD707 5544 bytes
font_01_sfnt_off0000e9d3.bin
7e8955de5d6a4a93931e2fdeb3200982c10da7066ebc582620cf8e76074f42b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D3 11776 bytes

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