Malicious PDF — malware analysis report

Static analysis result for SHA-256 60932d9a02b7137d…

MALICIOUS

PDF

97.7 KB Created: 2021-06-27 22:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 68659f119d9e86f741d30275c66912ea SHA-1: c371d2912e4169f0947d8e95e52d8210c1351989 SHA-256: 60932d9a02b7137d4010c8b0f9c50446a0c64cbaf1a33923ae62da8d86e93ea2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, directing users to numerous compromised WordPress sites hosting other PDF files. The presence of multiple external URIs and link farms suggests an attempt to distribute malicious content or lead users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/isb9pc45l6g0f86i6sdtoji4j4/24193065634.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ea71afd2c---regafe.pdf
    • http://kondicionery-ivanteevka.ru/upload_picture/file/rirewonuravovoxisaso.pdf
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b058e971da4---80070973084.pdf
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/c2d4a05a93bd1f6ea97e69e91ddd3144/48787160124.pdf
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e74955301---84234203404.pdf
    • http://isystemlab.com/admin/ckfinder/userfiles/files/95852290968.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607764aa91f7f---1084639865.pdf
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec1783490---bezamexarisolero.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/i90lrot1h974diqtrjk3b90401/70258328256.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079803ab4a53---gudopu.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cde53d0def---39608996650.pdf
    • http://abpaluso.com/upload/file/19092681166.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/foq02854keatnggs28qecuddm1/ziwosejudojusa.pdf
    • http://alacarte-design.de/userfiles/file/zamugodigasavonugor.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/d395b303d9a67e1364388835a9595453/jegisakotefivafarag.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607728160f26c---39257342763.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/ab9906e6888e6881e6563d9f02c995f7/91621586735.pdf
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/061aaacecf9fe297101b95cd2b6af937/riduduv.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/129bua4i9u04h3h5pmbodein0d/tubuminupiv.pdf
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608aada3ac4a8---84725877195.pdf
    • http://dok-vo.ru/userfiles/file/vesek.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=digital+marketing+interview+questions+and+answers
    • 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_off0001197f.bin
3596932f8353d836e747694455375f1661e8c6401bc717f412244b0889e69b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1197F 17792 bytes
font_01_sfnt_off00014829.bin
54e2cb32971512a3de82899e5cdadafa0819dcc00b2a8f61be0cf5406575bb47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14829 11084 bytes
font_02_sfnt_off00016180.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16180 16792 bytes

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