Malicious PDF — malware analysis report

Static analysis result for SHA-256 0598f6c4e8515d04…

MALICIOUS

PDF

133.2 KB Created: 2021-04-02 06:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0663a0cbaf9bc9a6248645a5471a7c50 SHA-1: bf09c0ed9f747b7b5403544ec495456d7dba275f SHA-256: 0598f6c4e8515d04f57e4fbf283b09865b3f4dd0ee39b349d33ec5cf85bce8cd
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or phishing for credentials. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=aleviten+in+deutschland+pdf PDF link annotation
    • http://xruhdfo.site/nufefisemurisomevufemotowci6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_6006266716f3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472788/normal_606646e1a7d50.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/negevurerafikaxajugesenu2d6zv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413223/normal_5feb38cfb1068.pdfIn PDF document text
    • http://portkamesto.site/knowledge_of_self_book1tlz5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383452/normal_5fe51c0ed3216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472481/normal_6031f6bad569c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490515/normal_5ff0150632e91.pdfIn PDF document text
    • http://lg-copyrightforms.com/xepasub9qh.pdfIn PDF document text
    • http://votadunepit.22web.org/adding_and_subtracting_integers_worksheet_math_drills.pdfIn PDF document text
    • http://merishwheelrecords.com/60934000796naqt9.pdfIn PDF document text
    • http://wekeb.space/dijisugilirowasidowujl3md4.pdfIn PDF document text
    • http://yellownatural.space/bifuxinagat36mr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tenasupufowok.epizy.com/bride_and_prejudice_songs_free.pdfIn PDF document text
    • http://simavanexija.rf.gd/kugifenezelejazudito.pdfIn PDF document text
    • http://zexitifi.rf.gd/xitidixoxajifenike.pdfIn PDF document text
    • http://gagutaxu.rf.gd/consulta_reporte_centrales_de_riesgo_colombia.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A90E 5196 bytes
SHA-256: 3f48a245bb0dd8615698526fd8c66e0e4117ef8e93757103bc03bf559022053a
font_01_sfnt_off0001bac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAC6 17356 bytes
SHA-256: df302992483eda9a36bf56cd6b68fdf1e49652eb510c718de650f10780fed86c
font_02_sfnt_off0001edfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EDFA 17184 bytes
SHA-256: 8708aa41a07eaaa021d9b2b992c6d5cd9318ce0cf3ffcd1421a7a2a9c9965155