Malicious PDF — malware analysis report

Static analysis result for SHA-256 715c88b7e667b626…

MALICIOUS

PDF

85.9 KB Created: 2021-03-28 23:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4205f41084470368072df1440f1995af SHA-1: 993bdf7d95ceaa3aca970088a0ce2a1b246c90a7 SHA-256: 715c88b7e667b626fc70ab119aae81b615710f92e240592a7939d424febaa83d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'fokemale.ru', which is a strong indicator of malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/wix?keyword=soul+eater+free+and+eruka PDF link annotation
    • http://mjawebdesign.net/415920581825pcq9.pdfIn PDF document text
    • http://gopadaxin.mywebcommunity.org/anisocorie_etiologie.pdfIn PDF document text
    • http://jisuvakuwiraza.medianewsonline.com/jirepaloxoxasogoliji.pdfIn PDF document text
    • http://neriwor.medianewsonline.com/pifunigobaxuwasidebo.pdfIn PDF document text
    • http://zifufarox.getenjoyment.net/89853423027.pdfIn PDF document text
    • http://iceteas.space/16918120912py2lt.pdfIn PDF document text
    • http://golden-bridge.pro/95073198776pnwnp.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/online_restaurant_booking_system_australia.pdfIn PDF document text
    • http://teasmall.space/radio_interview_script2ocv9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470960/normal_602612a75dab5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_5ffd4ae1dfa42.pdfIn PDF document text
    • http://guzoseta.getenjoyment.net/72776161381.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ba30dffa-51fe-4caa-9472-6f142403a9bb.filesusr.com/ugd/c2007e_164b11547cc9458d8bfe03b94e0bce1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/blue_prism_5._0._10.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/sopufemupal.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/20934211278.pdfIn PDF document text
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_bd92c3a9c8b94ec4a3cad14cab03023a.pdf?index=trueIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_4e96594dde44458292013ad2c687e96a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/file_reader_javascript.pdfIn PDF document text
    • https://681956c7-2c57-495f-b996-d04b50c745b0.filesusr.com/ugd/907d98_64d3d76380e0479490d9a34ea46c4e2f.pdf?index=trueIn PDF document text
    • https://07d68bf2-0661-47e2-9ffe-eae068a071af.filesusr.com/ugd/fef806_3b2b88a08bb0431fab807a1251df6e27.pdf?index=trueIn 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_off0000ffcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCF 5368 bytes
SHA-256: 75ad775516f2494eb7915d3f24256718af3dec05b28648b24f8088c409a2a83f
font_01_sfnt_off000112ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112CA 4892 bytes
SHA-256: 159c89cb6555e68ec45123e9be42cebb9d76ebfc19847bac2ea86b13f5c9d9b3
font_02_sfnt_off0001237b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237B 11608 bytes
SHA-256: 726844606e9634212afa2f92e36a9b42d038e4b0704975d2814404e00ac744b3

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