Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db132eff21037e6…

MALICIOUS

PDF

75.7 KB Created: 2020-12-18 07:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3aa3ad22f30cef0a6e65745f99321ef6 SHA-1: 1a5e7e3777b27cd24212a67205bce7a002cb06cd SHA-256: 1db132eff21037e6b9bb9bc1ba7b8024f68b3ed198f640ebbafa0c7d59ba80f1
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 URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain keywords related to the embedded URL, suggesting a lure.

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://trafftec.ru/123?utm_term=12+volt+power+supply+for+car PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5fc070799bdff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f9479c098126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_5fd670253a37e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_5fbb1cefee103.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_5fa4fb4f7ec1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471096/normal_5fd966cf7def6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406170/normal_5f964bbb082ca.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/fejififimaketo/putlocker9_ru_rick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a6aa01-a5a6-4142-8cc0-1b2a60e75fcc/naxiwup.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/arihant_math_books_free_download_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/12496235945.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/20728066670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec8bb14c-1eba-492c-9488-93f1ee57e3d5/88449092794.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/36553442254.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/2019_calendar_with_holidays_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/lajozinijikegodofane.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_off0000dcb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB8 5080 bytes
SHA-256: bf44269cfe7b1a077f94f7c21b5959706ac0215a988c198c369843d797445784
font_01_sfnt_off0000ee40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE40 10956 bytes
SHA-256: cef0113575a7736af50512ccd20d79a3ab93f617f330890cbf298199a35856ca
font_02_sfnt_off00011397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11397 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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