Malicious PDF — malware analysis report

Static analysis result for SHA-256 114b94bb7c372aaf…

MALICIOUS

PDF

76.9 KB Created: 2021-04-20 12:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: e8b2c948e73c3b094935a3c2ebd64c53 SHA-1: f1c210ded3619aa21d397b2e3c0ca8e83b2ea404 SHA-256: 114b94bb7c372aafd66d6f07efa8dcec69ffe4a6d9eb0b3d0c455f5e214cc207
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 suspicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Diablo 3 builds demon hunter', suggesting a lure to attract victims to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=diablo+3+builds+demon+hunter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5fd1f23313f9a.pdfIn PDF document text
    • http://nashremont.site/gofujun4gpl9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_60511cba2e98d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403404/normal_6010a01837c49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369491/normal_5ffb0525bdf97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478664/normal_605ac1a2a72ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_5fd3586aa37b1.pdfIn PDF document text
    • http://wanikagupefurav.22web.org/38334024698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421969/normal_60630fe84a166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496013/normal_5fcf2d923df13.pdfIn PDF document text
    • http://fbdirect.site/rv_camping_checklistx6sp5.pdfIn PDF document text
    • http://votexetoke.iblogger.org/bemexajuvuxesaxo.pdfIn PDF document text
    • http://peuly.xyz/why_the_sky_turns_red_when_the_sun_goes_down_summary7790o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462350/normal_6054d5be1b37b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/mifigezasije.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/penatapanirebo.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/rajizajafemiredozuwi.pdfIn PDF document text
    • http://kojaburu.epizy.com/refow.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/how_to_use_apple_time_capsule_for_backup_only.pdfIn PDF document text
    • http://dajaxul.epizy.com/cowon_plenue_l_review.pdfIn PDF document text
    • http://moxogojokerop.rf.gd/aprender_frances_a1.pdfIn PDF document text
    • http://gomiguru.epizy.com/adobe_after_effects_cc_32_bit.pdfIn PDF document text
    • http://telimagafire.epizy.com/58136628737.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/jebezapiludetovu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 5368 bytes
SHA-256: 298f091aa9d0a49d2c18fdc62e9a8861ca807f942cd64c937f0ddbbeeec13c36
font_01_sfnt_off000101c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C8 10744 bytes
SHA-256: 5b70c5bd9a6627f458f4d06fbf0f7a2137c3e6b1506108d8b7602e4ec10f50b6

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