Malicious PDF — malware analysis report

Static analysis result for SHA-256 49013afb608c0b1d…

MALICIOUS

PDF

76.4 KB Created: 2021-01-30 19:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 68a2e07ddd40550016a290b9060aff7a SHA-1: 9e24d6935220bbcfe0f1dc3dc2d157a2c9f88ad6 SHA-256: 49013afb608c0b1d3f3de69867c5c470386a8e116fc13d6f698ad13762bed71b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. The embedded URL, https://seumenha.ru/wb?keyword=bowling%20king%20anime%20episode%201, suggests a lure to disguise the malicious nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely leveraging a client-side exploit.

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://seumenha.ru/wb?keyword=bowling%20king%20anime%20episode%201 PDF link annotation
    • https://cdn.sqhk.co/wupofolizaj/Rhfiche/cheat_code_for_sims_4_money_xbox_one.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470027/normal_5fd671fb9b7fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5fe96fde97785.pdfIn PDF document text
    • http://idealicaitalia.website/gibapuwakirapuxas7fp3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408340/normal_5fcbbb579d879.pdfIn PDF document text
    • http://avtoshkola-region26.ru/pobasotakadu14jkb.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/iahbjd5/ripivuzikapes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_6010c5cb74a03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417212/normal_6008481c1c178.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370304/normal_5fe3e43c3dd47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478961/normal_5ff7f34c7a73f.pdfIn PDF document text
    • http://summ-green.fun/sajebud3n2.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/WZFUolS/7417172462.pdfIn PDF document text
    • http://persequenteamsohbet.com/wenawavajurevojip0he.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/norozovijalu/cnooc_annual_report_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/weather_report_in_chennai_today_and_tomorrow.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_off0000d578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD578 2972 bytes
SHA-256: 930f23d2995161be8163e1e1cc0825de794ffa756557b40d0517da21fd913d21
font_01_sfnt_off0000e020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE020 5440 bytes
SHA-256: a124117ecf8b7d2bf829efe73ed20f6a8f76b2078c42eae34648eee0e9463816
font_02_sfnt_off0000f2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AA 22044 bytes
SHA-256: e08fb7c031942f6f3b5bffb0cbc919647b19dd76c2ce6a9a831704bc7c8e4ff7

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