Malicious PDF — malware analysis report

Static analysis result for SHA-256 555afecc74af46c0…

MALICIOUS

PDF

122.2 KB Created: 2021-03-31 13:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 068469084101707c44b022fff2eaea6f SHA-1: edccd3e546c073744d2e7fb9c871383927da5e20 SHA-256: 555afecc74af46c01d3f169be4b9e42b56ab671c8af7de9fc64bd230f0a81540
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL 'https://leonvi.ru/award?keyword=metabolic+autophagy+pdf+siim+land' suggests a phishing or social engineering attack, aiming to trick the user into visiting a potentially harmful website. No scripts were extracted, but the PDF structure and URL are strong indicators of a phishing lure.

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://leonvi.ru/award?keyword=metabolic+autophagy+pdf+siim+land
    • http://gawivekarebuvus.22web.org/excel_vlookup_formula_example.pdf
    • http://powerpoint4you.ru/95457863967t1i95.pdf
    • https://cdn.sqhk.co/vugasoveg/gggYZjc/96132309274.pdf
    • https://cdn.sqhk.co/veletafi/hhjCUch/25882607823.pdf
    • https://cdn-cms.f-static.net/uploads/4450248/normal_603077a78f624.pdf
    • http://texivej.sportsontheweb.net/94359934028.pdf
    • https://cdn.sqhk.co/borefigux/igXgiif/luwujirowivevipepez.pdf
    • https://cdn-cms.f-static.net/uploads/4417519/normal_6040068564ef9.pdf
    • https://cdn.sqhk.co/kosojilufut/Zhgjgij/my_talking_tom_friends_download_pc_free.pdf
    • http://zetumitufam.mywebcommunity.org/tipos_de_factores_psicosociales.pdf
    • http://kreativoblako.com/29269714186ayl8u.pdf
    • http://giveaway2020.info/format_apa_writing_styleh1ccg.pdf
    • https://cdn-cms.f-static.net/uploads/4426675/normal_6051dcea7e68d.pdf
    • http://marketitaly.info/xadefederitumosaparazm9ipt.pdf
    • http://lovifolam.iblogger.org/penagid.pdf
    • http://wacc-cat.org/8960619315ezm3.pdf
    • https://cdn-cms.f-static.net/uploads/4368504/normal_6025d0518d659.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zudobuzediret.rf.gd/48032784687.pdf
    • http://kediresij.epizy.com/nra_range_rules.pdf
    • http://natipezosepe.rf.gd/advantages_and_disadvantages_of_non_aqueous_titration.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017cd8.bin
3dbc6d2d3fdd09eeccfb4575dd301090a32013e363ee4d5f38b3b3ff00ed9568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17CD8 5600 bytes
font_01_sfnt_off00018fcc.bin
66f625aca7f287425d0913d7abbcdd8d4167dcfd3f73bd905598b62b70f5305c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18FCC 12120 bytes
font_02_sfnt_off0001b83a.bin
5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B83A 16060 bytes
font_03_sfnt_off0001ccd2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CCD2 4324 bytes

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