Malicious PDF — malware analysis report

Static analysis result for SHA-256 f336592db3837767…

MALICIOUS

PDF

88.4 KB Created: 2021-03-25 14:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c0e3e25a5e6550f0f33872bfb18a1cb SHA-1: 2de62c509b32136e0b387b6436855b85f1ae84fd SHA-256: f336592db3837767caff9957174a5ab96a6a2bf095998dce1b937cc0910df10b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as 'apes energy math practice answers'. This URL, https://mezovuduw.ru/wix?keyword=apes+energy+math+practice+answers, is likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=apes+energy+math+practice+answers
    • http://poroda.site/33882255530hyz5z.pdf
    • http://ukranews.icu/space_engineers_update_log3t2yy.pdf
    • http://bigchance.pw/steamer_for_clothes_costco8jgow.pdf
    • http://monongzhlh.space/majutobekaxazupize49xv.pdf
    • http://tcerkovniekupola.space/nccn_guidelines_for_patients_pancreatic_cancerl9mpi.pdf
    • https://cdn-cms.f-static.net/uploads/4456391/normal_600b1f8415a7d.pdf
    • https://cdn-cms.f-static.net/uploads/4369507/normal_603b291284e78.pdf
    • http://vesimawamom.66ghz.com/44245985383.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_ad102ee77bdc4b8ba1a4109ee7597871.pdf?index=true
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_f6e2315d406541c7b521b9bab0975fad.pdf?index=true
    • https://s3.amazonaws.com/dovulavavo/77996476488.pdf
    • https://s3.amazonaws.com/dojonuta/win_tv_guide_albury_wodonga.pdf
    • http://dugoneluxokudu.rf.gd/west_bend_bread_machine_recipes_manual.pdf
    • https://s3.amazonaws.com/wizedumi/imperishable_night_sheet_music.pdf
    • https://f8ba888e-8f71-4fde-8303-550399648f4e.filesusr.com/ugd/17ce20_6c63453049014de5b228b6cd7845aa1c.pdf?index=true
    • https://s3.amazonaws.com/tikofaketonub/acura_ilx_performance_0-_60.pdf
    • http://nifagusimesizi.epizy.com/9307229895.pdf
    • http://wugupur.epizy.com/ruwunotosuduwasugovagun.pdf
    • https://5b949be5-44ef-49af-96c7-0ebaa8fe632e.filesusr.com/ugd/3402b1_265a018d2f8f40b382d4f61ecdf59ccf.pdf?index=true
    • http://fazetotunoju.epizy.com/waxosi.pdf
    • https://5f1c1209-45f6-45c0-988a-e0aaa04be055.filesusr.com/ugd/ba5820_8b5ec711881742cea4a6b46dd491d929.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_off000103f2.bin
d47959c7b9986db46f2ca237ba92435f08bc7e45708569b7564673876537b0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103F2 5500 bytes
font_01_sfnt_off00011697.bin
17e4831b4c7336a8a70ca2dee874b784e915be8cb3537c866f4ac05be37cda03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11697 11760 bytes
font_02_sfnt_off00013e2d.bin
fcf6931247c73048e89dbccf8dc7da10622490a977552be3b6d9d9ad2860ddc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E2D 16344 bytes

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