Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7ad9dfe88a66d0…

MALICIOUS

PDF

81.5 KB Created: 2021-03-14 08:00:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 68fd003486a78d0ac59a7349873bf0e9 SHA-1: 5e0afe3954ade702920ad5cde6a9769fecdc4a29 SHA-256: 3f7ad9dfe88a66d01c113ca8b8aa0376f2edf59d66f97787afb81b6fe98a3b78
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The PDF contains an embedded URI pointing to 'https://jottigo.ru/wix?keyword=gg+gab+discord', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wix?keyword=gg+gab+discord PDF link annotation
    • https://lifinupal.weebly.com/uploads/1/3/5/3/135336288/1e094568a5997d.pdfIn PDF document text
    • http://beach-fruit.fun/62003781923wersd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5fdeb07ee17aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fec5b6520237.pdfIn PDF document text
    • https://vabeluzaxudi.weebly.com/uploads/1/3/4/8/134884936/nuwunurumediziluten.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489988/normal_603453220ade4.pdfIn PDF document text
    • http://icub.tech/kiziwuzemebozisafmjwb.pdfIn PDF document text
    • http://pornbustyvids.com/conjunction_types_worksheeth2qun.pdfIn PDF document text
    • https://bafibosu.weebly.com/uploads/1/3/0/7/130738803/8fc6a6c69e7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_601e8c3513d13.pdfIn PDF document text
    • http://takipleskazan.org/lubizavorafemarowuvesisf2nsh.pdfIn PDF document text
    • http://yazansoft.com/66049895695z79uo.pdfIn PDF document text
    • https://mirotimazafisel.weebly.com/uploads/1/3/4/3/134352803/6860802.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fcd1f8b26543.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_6007bda544f18.pdfIn PDF document text
    • http://shoop-ff.ru/geometry_congruence_proofs_worksheetclcvi.pdfIn PDF document text
    • https://muxolebutelun.weebly.com/uploads/1/3/2/7/132741382/tenenapinuwe_kifuwonumiku_giloluw_xedosogixef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5ff3fd1f41c34.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/fedufiporara/retinopatia_diabetica_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/ragnarok_m_eternal_love_mobile_guide.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_off0000f19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19F 4732 bytes
SHA-256: bdf4030a5123ac4a3d53b879789bbb49a1cb70f8dd2709b6aba0988e0b1dc555
font_01_sfnt_off000101b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B2 12020 bytes
SHA-256: e7d26e576358071ff17f6c5eac736b2a59daa08f2b7e42d13bcaf480d2517f77
font_02_sfnt_off000129a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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