Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd09603c0ab86d32…

MALICIOUS

PDF

106.7 KB Created: 2021-09-07 07:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: e80248c5acdb2413ae847aab88297da8 SHA-1: 4c4d12bdcaf760bf6548a2dead35d65a451887fc SHA-256: fd09603c0ab86d32c7689c8d55ea9c930608f8cb3003c293961450ea020cb9e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5072

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pixomot.ru/uplcv?utm_term=principles+of+international+financial+law+pdf PDF link annotation
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/3c983b298a6209644ebc75ff57399934/40759187337.pdfIn PDF document text
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/fems85ma1m3cq5bovl02l66iuq/52884168310.pdfIn PDF document text
    • http://zl369.net/userfiles/file/garufodakuwinugudinugog.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/jovoxubexelozoxosabagef.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/cfe36c64d14211c3388dbd5c6eb32028/vixod.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/vamonudafegutigulapuje.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb57764ee---46153625910.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc2437c877---93702288743.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/7pl923d6jcdqi8in9t738ic806/nazanalagukawegerap.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924ad05f413---34322525060.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/91712927254.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/zafetisopoba.pdfIn PDF document text
    • http://temple.mo/userfiles/file/polabidu.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16086775fc94b3---sagujalovovozowa.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161195aa543182---12561472214.pdfIn PDF document text
    • http://citra.cl/userfiles/file/50228791780.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077c273e483c---2573944213.pdfIn PDF document text
    • http://trovas.com/userimages/liviruj.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1611f1f4729320---64412466571.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/5fl0j52d6qpkiam2atv182uk81/30441091955.pdfIn PDF document text
    • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/98991229436.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E5C 10700 bytes
SHA-256: 005dc3c6ec42748b5bba3f84add139dd43e06b60bac48ba40d92aa3e661bad86
font_01_sfnt_off00016712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16712 18760 bytes
SHA-256: f30355427d7e4d86e2059114d0249c57fcb9a2cbf9ca6dcaa66895900adb0ca3
font_02_sfnt_off000197d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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