Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca01b1976fbf936…

MALICIOUS

PDF

74.7 KB Created: 2021-02-22 09:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 001fc1861c0f4414b1756c68d6e4b6d0 SHA-1: c050046a55304e89fdf5bba1935a8db49a2ad3f6 SHA-256: 0ca01b1976fbf936fcdacb1b72c824ae213b1a34ef910fa9757e6cf875af7d4c
96 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, appears to be a lure related to device troubleshooting. The presence of numerous embedded URLs, including one pointing to 'leonvi.ru', suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself contains malicious elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=lg+g+pad+7.0+home+button+not+working PDF link annotation
    • http://atlas-copco.su/31099549857j6hnm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421201/normal_5ffa2461b9d41.pdfIn PDF document text
    • http://shoop-ft.ru/the_game_book_summaryzqak0.pdfIn PDF document text
    • http://summ-ita.space/rutejowatibomerijejufasl5efm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474456/normal_60015cde21bb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_5fca1239add8d.pdfIn PDF document text
    • http://uchebnoe.website/45157293665l7koq.pdfIn PDF document text
    • http://plusstore.pro/seminer_etkinlik_raporurnxj3.pdfIn PDF document text
    • http://devlp.design/221b_baker_street_game_bookhhwej.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/OruuieT/xuzavurexegipibapek.pdfIn PDF document text
    • http://silver35.ru/billing_statement_format_in_words1dvtv.pdfIn PDF document text
    • http://pressit.fun/viduvisalewobesezubilirodtb8ge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411696/normal_60035580cc41c.pdfIn PDF document text
    • http://astropsychology.site/tojijedolozajimanopunosoljtmlw.pdfIn PDF document text
    • http://kkkirrreeee.space/ice_cream_maker_summer_functionbh57l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416672/normal_5fcfee80a4f69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_602620861ca3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411491/normal_5fdf672475f37.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53F 5652 bytes
SHA-256: c20149b0b42096f6758ca5335f7708e9047ca6fad16ad8ff884cef75b851f964
font_01_sfnt_off0000f87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87A 10868 bytes
SHA-256: feb8bb095c53864e2181ecd1f4bae5dda3da9d411c2eed8a1ce9e5f07eaa2705

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