Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fccb2e809c8632…

MALICIOUS

PDF

81.8 KB Created: 2021-03-24 19:32:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ffbbaa9d6135833d2693e8323dd018a SHA-1: 96d3b5cce493d44e93d8fbbcfabc3d76ef8220e5 SHA-256: b8fccb2e809c86324990602a66785b5df190ce1059ad1725a0f05e84bd7ec827
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is presented as a search result for 'Joseph asagai personality traits'. This suggests a social engineering lure to direct the user to a potentially malicious website. No scripts were extracted, but the presence of embedded URIs and the nature of the detection indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://mezovuduw.ru/wix?keyword=joseph+asagai+personality+traits
    • http://pomirkapa.site/9-_4_compositions_of_transformations_worksheet_answers1jddh.pdf
    • https://cdn-cms.f-static.net/uploads/4369522/normal_6025fb8d151a8.pdf
    • http://1xbets-regs.site/harry_potter_fanfiction_lemon_minervai33nm.pdf
    • http://steelsho1.club/basara_2_apkvxp53.pdf
    • https://cdn-cms.f-static.net/uploads/4369331/normal_601007ad66d58.pdf
    • https://seruborakumew.weebly.com/uploads/1/3/4/8/134849990/8628133.pdf
    • http://extraterrestrials.space/53847402622itto4.pdf
    • https://guxadudupis.weebly.com/uploads/1/3/4/7/134751999/fasukewin.pdf
    • https://nurosizakudagag.weebly.com/uploads/1/3/4/6/134699554/jivepaxeka.pdf
    • https://xasigali.weebly.com/uploads/1/3/4/3/134363336/feduxewavek_somazip_bigevulu.pdf
    • https://xisedemagi.weebly.com/uploads/1/3/2/6/132681548/1446629.pdf
    • https://bevoparekev.weebly.com/uploads/1/3/4/0/134018333/a77dc65e7.pdf
    • https://cdn-cms.f-static.net/uploads/4367920/normal_600dfd5a136f7.pdf
    • http://reestr.site/zikujisozisunadivatuwofhbaeu.pdf
    • https://cdn-cms.f-static.net/uploads/4465000/normal_600b484adf5db.pdf
    • https://kixofugowewo.weebly.com/uploads/1/3/1/8/131872146/89633597.pdf
    • https://musevupuli.weebly.com/uploads/1/3/1/4/131438528/lugomomuja-geseboromoj-vesigimom.pdf
    • https://static.s123-cdn-static.com/uploads/4530846/normal_5fee92d4ef887.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bevekizadoxuj/leptospirosis_guidelines_doh.pdf
    • https://s3.amazonaws.com/bipepezuwed/animators_survival_kit.pdf
    • https://s3.amazonaws.com/tasufagijaremo/dofukojipuruvaz.pdf
    • https://s3.amazonaws.com/resabomibogodaw/rock_climbing_fitness_routines.pdf
    • https://uploads.strikinglycdn.com/files/b2082fbb-5027-44cb-9498-d0165bfcc394/wunusixasofamekokojez.pdf
    • https://uploads.strikinglycdn.com/files/13998d76-ee64-4c39-94a5-504d52cc9a82/84944457192.pdf
    • https://uploads.strikinglycdn.com/files/e3c54f13-a544-42d1-a40c-a2110e9a6005/eragon_book_christian_review.pdf
    • https://uploads.strikinglycdn.com/files/e0551d8f-cf0f-4955-9f32-490174222b70/chicco_keyfit_30_vs_britax_b_safe_35.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_off0000f778.bin
a2f93ae5113a7c7f00625137eb97f5fa9525002f67d362d649b41f54206a2dca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF778 5172 bytes
font_01_sfnt_off00010908.bin
f3f8a10abf5ce55e477725b7f83a617fdf5f5ffbd32311c17dcdcbc4c3e9fe25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10908 1812 bytes
font_02_sfnt_off000111e4.bin
a48bb2abeafef70853960f89f70ba30135d593bfb11dc9356cc869c74a486881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111E4 11532 bytes

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