Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d247f16f596209c…

MALICIOUS

PDF

85.1 KB Created: 2021-07-01 23:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3d4e0ab801272fb444864ce0ba806b08 SHA-1: 4b6bc0727cb142f350c6c04db1e5ed2924c5dccc SHA-256: 9d247f16f596209cc19b4752d530d68b1b7c52851eab95370eeb55119a537f0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS uploads and disposable hosting, likely to obscure the ultimate destination. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to external sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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
  • 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 http://gtshotel.it/images/file/kosazifitomakij.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/02953fe59ae5aacf9c49d7d74b2f87ac/witakepetasojakibimokisu.pdf
    • http://osc-pribor.ru/products_pictures/file/mekasepafotori.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083dc2ce6daf---5220931791.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5a091d786---gikaluwaxevuzadoxode.pdf
    • http://lhsclassof68.com/clients/73441/File/tisomepabogaxedoziwine.pdf
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/ef9dce01b13b2dfba654fb77bc1ccfe8/86957250496.pdf
    • http://humanitool.ru/userfiles/file/nunowekunerek.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a849fa93908---potegokifomujidegobine.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d269a52f71c---32158792793.pdf
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/ludiwuxomademizag.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/63f298c14a0c853ef8dcd8a174904e46/jabupevazo.pdf
    • https://bahceneryaman.net/public/content-images/files/pikugakafizawozegedorano.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160876663179b0---paxoli.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/99a924cbfaa58e3bc4e7501aa6202164/xuwabi.pdf
    • http://weymouthhighschoolclassof62.com/clients/5/50/50fe23896e84432c97ff20d680692bb9/File/66305933808.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160751aae9d376---19840768228.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608793e226391---pizipalafasuvutoraga.pdf
    • https://anukulagrotech.com/userfiles/file/xewofipoxa.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dad12400af0---64155007169.pdf
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082d8c1454d8---21365005572.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1606e83101e207---58618248062.pdf
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160dbbb2641a2e---49064514057.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16088ee3c0fe71---48249881736.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=tracy+horan+solicitors
    • 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_off0000eb3e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 16792 bytes
font_01_sfnt_off00010355.bin
3905b0e3616473cb72800b6e8057165c8ae5a4798ae9bff2c463e8629a323708
pdf-font-stream PDF embedded font (sfnt) at offset 0x10355 10272 bytes
font_02_sfnt_off00011a65.bin
8c0cd3610a071c6c57f514000fc1a2d9c8c0cee26e9936c4e9432188af8fd006
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A65 17328 bytes