Malicious PDF — malware analysis report

Static analysis result for SHA-256 629a778d8d76ace3…

MALICIOUS

PDF

78.7 KB Created: 2021-02-17 10:55:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 970336f15ad68f3bfc3f084663b1ba21 SHA-1: 923f85d846d4c1ce833fafd4e971e4025ac36fe4 SHA-256: 629a778d8d76ace3acfd454630fd866b822133c68dccaae4bb29b89ea436687b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to search queries.

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://jacksth.ru/wb?keyword=what%20is%20the%20best%20weight%20training%20workout PDF link annotation
    • http://xovekofetovo.66ghz.com/casanova_games_free.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/fdbfe.pdfIn PDF document text
    • http://dipitazifageb.iblogger.org/gozepun.pdfIn PDF document text
    • https://zuzesewijolane.weebly.com/uploads/1/3/1/4/131406438/xubagat-winotogar-kazamuze-gosezuturokenax.pdfIn PDF document text
    • http://rejasepilibuxep.iblogger.org/zolozomobidifefutip.pdfIn PDF document text
    • http://honey-love.ru/kajibiwaxakowunafilo9k6b5.pdfIn PDF document text
    • http://fikodon.iblogger.org/23106991378.pdfIn PDF document text
    • http://italia-doc.fun/modern_spirituality_crosswordvna7w.pdfIn PDF document text
    • https://xixonulavef.weebly.com/uploads/1/3/2/6/132683080/5391749.pdfIn PDF document text
    • https://bikonate.weebly.com/uploads/1/3/4/7/134715396/156ee36dc2d311.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokexodine.rf.gd/free_online_bejeweled_2_deluxe_no.pdfIn PDF document text
    • http://deravamosu.rf.gd/81471795988.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/chiari_malformation_in_adults_mri.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/xadedudinegizokovabitib.pdfIn PDF document text
    • http://zizokeb.rf.gd/emscharts_user_manual.pdfIn PDF document text
    • http://dotenax.rf.gd/kirumubopagetunul.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/18464332351.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/86680208218.pdfIn PDF document text
    • http://duwamiwimi.rf.gd/goblin_ost_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/monafopova.pdfIn PDF document text
    • http://ravimerafewede.epizy.com/lightroom_5_free_softonic.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_off0000e1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E8 5224 bytes
SHA-256: cb859db18c67345368bf739ab75f1335021e6e3eed82fe1f91bc8bd9644c6f96
font_01_sfnt_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 10748 bytes
SHA-256: 84550b1deacb94a7896dd320e0de6242320bf4e31b55ccec3b58ebcbaa8256d0
font_02_sfnt_off00011882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11882 16080 bytes
SHA-256: 81720e20ffa3d139c72085ec1afe74630d5ed49c1d82bfe1c6e21aae8c4355f5

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