Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f68171c08038893…

MALICIOUS

PDF

97.7 KB Created: 2021-09-16 20:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 79f0f9854a71f5280ece409a32b91854 SHA-1: 3130a88a530c71c6de5544e5d733cb2af2a413c1 SHA-256: 1f68171c08038893e302dcf72ec7ffbb5012bfaf8672030036b1ca7c3f764ee1
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=best+2dcg+porn+games
    • http://encino.ilovepokebar.com/uploads/files/bugupugigur.pdf
    • http://lean-ds.com/upload/editor/file/befesofivorumofuruna.pdf
    • http://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/10781031924.pdf
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c91a25a1e---tudafovodenezi.pdf
    • http://onnetsolution.in/userfiles/file/73510617460.pdf
    • http://esangsok.com/upfile/files/tovugexelofozinobepel.pdf
    • http://fkjz.cn/upload/files/2021/09/202109091234135436.pdf
    • http://www.puhito.hu/uploads/dinipowoxepoju.pdf
    • http://methese.com/upload/files/80303846295.pdf
    • https://www.edm-medical.net/ckfinder/userfiles/files/47795915514.pdf
    • https://condicionamentofisico.com/arquivos/file/56199751710.pdf
    • http://nhatrangpalace.vn/app/webroot/upload/files/giweropifepado.pdf
    • http://rogersdesignhouse.com/uploads/files/numozebarojefa.pdf
    • http://tantex.org/tantex/tantexuserfiles/file/rajoduzanemojej.pdf
    • http://barexkft.hu/userfiles/file/38704956104.pdf
    • https://www.bmo-agencement.fr/ckfinder/userfiles/files/4665469312.pdf
    • https://www.asoriofrio.org/ckfinder/userfiles/files/pogadife.pdf
    • https://zoomkish.com/basefile/zoomkishcom/files/bilasabowuw.pdf
    • http://hongsung114.com/files/fckeditor/file/tasofoxapumosiwasekijom.pdf
    • https://kildevangen.dk/files/kilil.pdf
    • https://uzunlarpeynir.com/dursun/upload/files/56490793459.pdf
    • https://harmony.im/userfiles/file/puxafavawowa.pdf
    • http://giadinhlaurenso.org/upload/files/38417477430.pdf
    • http://aguito.madteam.net/ckfinder/userfiles/files/wadubudewoxeviwurisideton.pdf
    • https://easyown.ddproperty.com/datas/files/61025736909.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115dd.bin
d59a472d4bae633d979586551ed2cc155f63a0bb93bfa0fbd8d56912f1fdb41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115DD 19932 bytes
font_01_sfnt_off00014968.bin
f6ac959132fbb4806130a9334504352d237a779e4b3723736ec87645ef03e696		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14968 10892 bytes
font_02_sfnt_off0001627b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1627B 16792 bytes

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