Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95b6719578c40ff…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 00:38:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a00e68cacd523003bf33df5f020fd87f SHA-1: e84c8461e10729ecd96854264c7d55c25b53dbca SHA-256: d95b6719578c40ff7ef822bafa1ba01a3cc3ac8d00f9422057d5b5128c3b4785
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that mimics a search result for a popular game, likely to trick users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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://druttle.ru/wix?keyword=nba+2k13+apk+android+2.3
    • http://fulilip.iblogger.org/45156019155.pdf
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/dd753f12.pdf
    • https://static.s123-cdn-static.com/uploads/4370762/normal_5fe318046cba7.pdf
    • https://cdn-cms.f-static.net/uploads/4401538/normal_6017862048c1c.pdf
    • https://static.s123-cdn-static.com/uploads/4448129/normal_5fedf3687869b.pdf
    • https://gerasulas.weebly.com/uploads/1/3/4/8/134861388/3506090.pdf
    • http://jorowelumupikom.iblogger.org/54399147575.pdf
    • https://wozexofinudere.weebly.com/uploads/1/3/5/9/135984457/kuromigam.pdf
    • https://cdn-cms.f-static.net/uploads/4420764/normal_5fe8c82d1b22a.pdf
    • https://static.s123-cdn-static.com/uploads/4467287/normal_5fcf3d0980e04.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://monufurojebuwod.rf.gd/rockstar_full_hd_movie_filmywap.pdf
    • https://s3.amazonaws.com/lixuzo/letter_sounds_worksheets_for_adults.pdf
    • http://sivopob.epizy.com/alarm_azan_ringtone.pdf
    • http://dudulexo.epizy.com/kenojuwirabobovuvefuzen.pdf
    • http://pidosowot.epizy.com/psychiatry_journals_accepting_case_reports.pdf
    • https://s3.amazonaws.com/zowejunef/graphics_calculator_casio.pdf
    • https://s3.amazonaws.com/petubapizo/bogabafimix.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d84b.bin
45f8e2772cac9a683159f4a839176f7bcad85da61a388e058f0d216ce33fa63f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD84B 5296 bytes
font_01_sfnt_off0000ea6a.bin
2a5dcf513d1e1f3518671da53c9de664789637e27471fa2d615792a8edb9072f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6A 13228 bytes

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