Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc298cc24238d5d8…

MALICIOUS

PDF

76.6 KB Created: 2021-02-26 19:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: aa0f7d4fb57af8afe9e210cdb5658bf1 SHA-1: 19a7ee0a140e5b0a20589bf19680ecd4f554dc0a SHA-256: cc298cc24238d5d84a073732714200e56d6560de53958c2f0d6262f17ce6e65d
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to a potentially harmful site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=difference+between+primary+and+secondary+standards PDF link annotation
    • http://lazirog.mywebcommunity.org/46999314418.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/2004_polaris_sportsman_500_service_manual.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/equity_alarm_clock_manual.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/sonodujajivipuxolob.pdfIn PDF document text
    • http://crystal-light33.ru/gudefodapesagunimuzizoctoin.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/a4djgib/halloween_stores_brooklyn_ny.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/ocfs_health_and_safety_training_online.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/hp_officejet_7612_wide_format_e-all-in-one_printer_cartridges.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/danovubupitofetadapiwup.pdfIn PDF document text
    • http://nesobaka3.xyz/bozojoxinefigabofalasosohz5i6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gimisorixosu/seroxajonokafojubem.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/calculadora_casio_dr-210tm_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/headhunter_company_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/wekiw.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/lesokakonobotodi.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/xoxefirazibuk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE248 5388 bytes
SHA-256: 8285d47ac91959ab18b65f559233a93c2b02ccf4f2a286f82b9f49b9d46fe039
font_01_sfnt_off0000f48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48C 9956 bytes
SHA-256: 48eea10d306645921e96e68cae9add11410e6b8800e198e2060075cbff0651c4
font_02_sfnt_off0001169c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169C 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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