Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e9c24a6d95faa0…

MALICIOUS

PDF

86.9 KB Created: 2021-06-30 00:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 472b1f066f5bb7cb30ac5a83c1b8ffb4 SHA-1: 6350c115f367d79744836dc001b6d9147f5bbcc5 SHA-256: 29e9c24a6d95faa053337e194177a91d61d57da3a178bdfee62c628f25d1a39c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links pointing to various websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to malicious content. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a link farm used to distribute malware or facilitate phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/c63b3642fb001c8a4a8941f7d8455ff1/dibujamimelogewewuzisefir.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a6e94d60aa---vinerevekin.pdf
    • https://iwnta.com/userfiles/file/64832895886.pdf
    • https://ancoraeducacion.com/images/32620944154.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/75444598ba5e73e0cc891b1554989e9f/59395558744.pdf
    • http://cepsagibyachtfuels.com/images/photos/dagopifed.pdf
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/aa8c5177a6e0053f2dbcff8ee44e9be5/62271776908.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cedfd13deaf---7026577033.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16090f2682e2e0---60689539044.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c7a5388f1b8---siritubir.pdf
    • https://hissekurban.com/resimler/files/88352237273.pdf
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/57414619315.pdf
    • http://camwater.org/media/files/12584266171.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609449ab07f2d---75180022847.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b312592f5---54266831755.pdf
    • http://seabeachthailand.com/UserFiles/file/83026074805.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/62fbdb82868cf69b6565fdc49517e725/22637597860.pdf
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/e65a56d094115580269cdc0da54de450/nasosumofumi.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=vivien+leigh+and+laurence+olivier
    • 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_off0000f304.bin
85200e54cc03f56d6bccd03413313eb6c36fe27f589a9a0b467897a97291d587
pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 10520 bytes
font_01_sfnt_off00010aa6.bin
4942d883edbc280b587d8b0e032d384bbf1e4f4849a06ff750088601fa624117
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA6 16928 bytes
font_02_sfnt_off00013676.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13676 16792 bytes