Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c59c66480e084d…

MALICIOUS

PDF

164.4 KB Created: 2021-03-15 15:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ff9bf9907187f992e8161ac22b8b2ee SHA-1: eb5ab2368251deeeea7a2a0f86614a173d7307d0 SHA-256: f9c59c66480e084d7ad51ee1532edfd69a1f875fac7fd0358cfe2410b117c750
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, 'https://maypoin.ru/award?keyword=alter+ego+1+a1+m%25C3%25A9thode+de+fran%25C3%25A7ais+pdf', is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to lead the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://maypoin.ru/award?keyword=alter+ego+1+a1+m%25C3%25A9thode+de+fran%25C3%25A7ais+pdf
    • https://rofowijajexer.weebly.com/uploads/1/3/4/4/134476616/9615c8a.pdf
    • http://modozadubop.mywebcommunity.org/22842268423.pdf
    • https://cdn-cms.f-static.net/uploads/4488116/normal_602244c722781.pdf
    • https://cdn-cms.f-static.net/uploads/4487194/normal_601ae506e5dc8.pdf
    • https://vifapuxup.weebly.com/uploads/1/3/4/0/134018045/zanumaz-bunuka.pdf
    • http://labifovejes.mypressonline.com/55458829065.pdf
    • https://ludabasekid.weebly.com/uploads/1/3/2/7/132740342/a39ba2a.pdf
    • http://watutuwox.iblogger.org/37810512564.pdf
    • https://matuwulivusoxuk.weebly.com/uploads/1/3/4/8/134897084/6538466.pdf
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5feb652a09c14.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_9b1437fb7a6a4c5c8ff64874afae23fb.pdf?index=true
    • http://baletax.onlinewebshop.net/vugujinafiwopevo.pdf
    • https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_d07f9f10338f48df8a7b763e9af2b624.pdf?index=true
    • https://s3.amazonaws.com/pajeriramal/app_to_instagram_videos_apple.pdf
    • https://s3.amazonaws.com/jenisozazewubo/vanadazoverawat.pdf
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_1810796a6bdb4308b7c97b731275095c.pdf?index=true
    • http://vokesakogo.onlinewebshop.net/wawoloxipolab.pdf
    • http://mivogunav.rf.gd/15949256070.pdf
    • https://s3.amazonaws.com/gitipelut/financial_analysis_paper_template.pdf
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_7a8516509cfe4c00a2e21dac7a51d89b.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000228eb.bin
f277e13b94dbb1feb55e995e415513ac569b24c665ab715e4ab0da9cf8ce1c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x228EB 5820 bytes
font_01_sfnt_off00023c5d.bin
04c6ec3e9e842350041c9b47978d2d6f2ed49457298e2b3d7655e113d92a3d45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C5D 15196 bytes
font_02_sfnt_off00026aef.bin
7b846c679853619c6a853726633e59d6f6d8d9bbf040f7ddba9e994dea5af314		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26AEF 16284 bytes

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