Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e06a7da5b01197…

MALICIOUS

PDF

66.8 KB Created: 2021-03-16 17:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87d0326c58a64d4ba3c7a34e10e04afa SHA-1: 4d6b3e63eb65747bc24f0c484366660d1d5a6f40 SHA-256: 61e06a7da5b0119743bb646d4acc9d8505777d796b3d91ab92c2dfa08005f9ca
124 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one specifically appearing as a search result for a book title, likely intended to trick users into clicking. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9859

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/award?keyword=kundalini+tantra+book+pdf
    • http://mazokawi.22web.org/android_messages_3._5_apk.pdf
    • http://vikiduxa.mywebcommunity.org/90327342188.pdf
    • https://static.s123-cdn-static.com/uploads/4404523/normal_600668a9ab825.pdf
    • http://fijeveg.iblogger.org/beep_song_mp4.pdf
    • https://cdn-cms.f-static.net/uploads/4420432/normal_6030628b909cc.pdf
    • https://cdn-cms.f-static.net/uploads/4448100/normal_603ed15ebd552.pdf
    • https://cdn-cms.f-static.net/uploads/4379483/normal_60219a10dba3e.pdf
    • https://cdn.sqhk.co/nukunudakiju/gCs6lMY/classroom_management_strategies_slideshare.pdf
    • https://cdn.sqhk.co/bijozugetav/jdibieO/65076475910.pdf
    • https://static.s123-cdn-static.com/uploads/4490720/normal_5ff0a1e19b1ac.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xukokumo.myartsonline.com/metahuman_deepak_chopra_download.pdf
    • https://s3.amazonaws.com/sivanira/beeman_sportsman_rs2_.22_cal.pdf
    • http://safadixuzet.rf.gd/lidajogemodamiru.pdf
    • http://wegugoleta.onlinewebshop.net/will_there_be_another_book_with_percy_jackson.pdf
    • http://medazupu.onlinewebshop.net/danume.pdf
    • https://s3.amazonaws.com/gudukupir/wallpaper_anime_android_pack.pdf
    • http://vupafigimewex.rf.gd/87946456600.pdf
    • http://pozidijapepore.atwebpages.com/debate_argument_structure.pdf
    • https://s3.amazonaws.com/juzinaramip/79572914390.pdf
    • https://s3.amazonaws.com/bajuse/30135641516.pdf
    • https://s3.amazonaws.com/wazagidonux/brother_driver_dcp-_l2540dw.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f3.bin
c4e64091fba54c47637c1cf07e63af6b3decf1503c84eddf682c38d0ff81c935		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F3 5032 bytes

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