Malicious PDF — malware analysis report

Static analysis result for SHA-256 8daaa559fd94077f…

MALICIOUS

PDF

200.8 KB Created: 2021-02-25 22:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2733e62daa2fada0314f64bb7d770595 SHA-1: a6bc62294a30a6035b2b48b82a89ff9d31905ce6 SHA-256: 8daaa559fd94077f01c45e2d5577eccbf8269aeef273d0c3215f94a8354adc76
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing or malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a site for further exploitation or credential harvesting. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://jacksth.ru/wix?keyword=persona+3+lovers+persona PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497075/normal_5fcd96904a19d.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/KsiqhgG/bloop_go_dark_moon.pdfIn PDF document text
    • https://nesajejegumexe.weebly.com/uploads/1/3/0/7/130776687/mofekigoginobegom.pdfIn PDF document text
    • https://radamokugek.weebly.com/uploads/1/3/2/6/132696621/zotuzusotopojo.pdfIn PDF document text
    • https://xuposebifaperep.weebly.com/uploads/1/3/4/6/134673232/movimofive.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/55456203056.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/jwifiYV/wugenosefif.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/66489143381.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/naxilikuvik.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/how_much_is_a_smith_corona_electric_typewriter_worth.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/IidUo0x/gevawakuruvutosenewovuni.pdfIn PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/7016164.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/black_mens_curly_hairstyles_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/jjKgdhf/85570591187.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vujuvisesakok.myartsonline.com/83431293835.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/are_wv_schools_closed_for_the_remainder_of_the_year.pdfIn PDF document text
    • http://wififeju.atwebpages.com/16046088508.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_off0002123b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2123B 68508 bytes
SHA-256: 848a520ee1dd327e39e0d521204afdf36e54ce3bb0c2aefcadb9753e76ab9f2f
font_01_sfnt_off0002df2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF2A 5036 bytes
SHA-256: 0612432cd279a09d3f5480445ab1e490ada01d2ad63816a60b20771ddd299027
font_02_sfnt_off0002f063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F063 10700 bytes
SHA-256: 0d0743ef118214afacebfd876992ae4410ce0cca3dccfe3694e28f7bd67aa15c

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