Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a39feee41df6d50…

MALICIOUS

PDF

71.9 KB Created: 2020-12-28 01:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 85069386800c803e65e906f3c5df4d42 SHA-1: d3922e7e321428dc59eb8071be2a521e62771d43 SHA-256: 1a39feee41df6d505da5cf4f98739648fec96644099c08e5eabb0afceeae5ee2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffnew.ru', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, contains text related to 'Isi token listrik' (electricity token payment), suggesting a lure for users to click the malicious link.

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://traffnew.ru/strik?utm_term=isi+token+listrik+lewat+bca+mobile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392656/normal_5f94fa2624a43.pdfIn PDF document text
    • https://cdn.sqhk.co/letowajaf/msicjjb/mega_ramp_stunts_master_speed_boat_racing_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5fa36de739645.pdfIn PDF document text
    • https://cdn.sqhk.co/revidifok/IGB1agi/download_game_driving_school_2018_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/kufusivekogo/Qiviahi/simple_room_rental_agreement_word_doc.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/8HVieSz/good_fishing_spots_near_me_saltwater.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/Drhcjdn/write_notes_on_memory.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fcdb38009d5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470385/normal_5fd2afce7df89.pdfIn PDF document text
    • https://cdn.sqhk.co/pusobatosip/ndhf11c/36345633690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f88ab04b2c7d.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/tufujifinobiro/bixadulikusomosuxojo.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/52407179308.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5176 bytes
SHA-256: 177d10e05e7b4e1cf25db01e503cb496fd0a00f7ff4a1f01836d2f654938bcfd
font_01_sfnt_off0000f104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF104 9880 bytes
SHA-256: 6ec4ab63236904042d41275c1a8647be4b6c4dd68c5d67fde1a615c3109e44e4