Malicious PDF — malware analysis report

Static analysis result for SHA-256 af34f6eb240c7d26…

MALICIOUS

PDF

95.2 KB Created: 2021-03-10 05:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 21d4f3fab21baa3ac96bf23e6f8fcf9d SHA-1: 297122b11ce1692f4dc90a32c1b5eb4519db33f0 SHA-256: af34f6eb240c7d26434c11febdda83574a2696f6a59f9f88bfd0b5555bbefb64
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/strik?utm_term=physicians+desk+reference+2017+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456676/normal_5ffe05f10c6c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474727/normal_5fdeefba848fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fee61ec4ef01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501791/normal_5fe70f78ac31f.pdfIn PDF document text
    • http://sejiroru.iblogger.org/arabic_dictionary_hans_wehr.pdfIn PDF document text
    • http://mjawebdesign.net/canyon_bottom_bracket_cable_guide6tqll.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495043/normal_5ff2f9c3f32a8.pdfIn PDF document text
    • http://cartest.pro/wheat_berry_salad_nutrition_informationzntpf.pdfIn PDF document text
    • http://4kuhd.me/bibugixofijokodadizqi70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411922/normal_5fee0180bc70f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_6020fa090de55.pdfIn PDF document text
    • http://maykistore.ru/447766077290u9ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofuwup.rf.gd/ketty_lester_love_letters_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/405e03d2-7e2d-4385-809c-45f82f17cac5/pokutifupeluroranuvezexor.pdfIn PDF document text
    • http://mojebaw.rf.gd/64071982636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92080b9a-10fa-4ebb-b717-7221c517d992/6127474114.pdfIn PDF document text
    • http://rivobuzuxi.epizy.com/68555659736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f65bd8a4-8e76-4354-b62c-137a51023661/giworomalemo.pdfIn PDF document text
    • http://zudosikewemer.epizy.com/music_theory_worksheets_guitar.pdfIn PDF document text
    • http://dizoterimivitap.rf.gd/semamafedumaxerewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/230bd0ca-d5c4-4cf6-8b5d-0cccd6032e13/99125372297.pdfIn PDF document text
    • http://vevojadiren.epizy.com/razer_blackwidow_ultimate_2013_change_color.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000133bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133BD 5784 bytes
SHA-256: 988869a74148d42bd1d1731c0d58a383a01b1eb0c8d3953c1fb12d6d1d93f102
font_01_sfnt_off00014780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14780 11848 bytes
SHA-256: 7bb00b514e0469fea7bb2341bd6cf9ff59e111f9127b1a0a685932e80c886317

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