Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d83dda2d7e1d938…

MALICIOUS

PDF

72.2 KB Created: 2021-02-26 21:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 69632bceacb362d48583559e7ecaf067 SHA-1: f74156473be19cafe2dc0bd6f11e9dbb668bd37a SHA-256: 9d83dda2d7e1d938136e3dadd705772617110b86438bea1f91ffc28ecb44bf79
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristic detections indicating malicious intent, specifically phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest maliciousness. The document body, though heavily obfuscated, contains text related to a sales listing, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=motorguide+tour+edition+109+for+sale PDF link annotation
    • https://cdn.sqhk.co/guvelebul/jggNLlX/counter_terrorist_gun_strike_fps_shooting_games_hile.pdfIn PDF document text
    • https://cdn.sqhk.co/fukefipemuw/Khfibgi/battery_daddy_case.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/iaghVgc/motor_vehicle_office_metairie.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatapegil/ajhW8hg/royal_farms_gas_station_ashburn_va.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/BFBMKjh/can_i_cut_your_grass_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/k1fjghh/vidmate_all_downloader_2019.pdfIn PDF document text
    • http://storeplus.info/badland_winch_5000_reviewlmpxz.pdfIn PDF document text
    • http://moresukko.ru/gokikozakupqk74m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391000/normal_60361381d41ad.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/piradi/xenuzuluti.pdfIn PDF document text
    • http://mevonaku.rf.gd/tujupifikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/wenuveziziz.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/tone_poem_definition_art.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/angular_form_valuechanges_not_working.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_off0000d911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD911 5432 bytes
SHA-256: a3f256d55978523047a33f6ac42207f7ded56aa9b2d77939119596ba4692781c
font_01_sfnt_off0000eba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA9 11520 bytes
SHA-256: 4ee517317e6df19e55c65550fe3604ccd6a26b83d7432e3182ee3786bf5b735f

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