Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4065794c5f1a1b…

MALICIOUS

PDF

89.1 KB Created: 2021-06-29 18:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: afeb285c088b1099873f201bb3bb9aa6 SHA-1: b3c1dcf1c9e2e5b522023e704c151824f3dccdbe SHA-256: 9f4065794c5f1a1bf39f345a8c87ba2fb693ff0cf14670a8fc1b78a0059c8fbb
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external PDFs hosted on compromised websites, suggesting a phishing or redirection attempt. The document body was unreadable, but the heuristics strongly indicate a lure for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/d13be517ca1d47b9b34b00f1384a33f3/lodoxew.pdf
    • http://meandnetworking.com/ckfinder/userfiles/files/tupesorepifejanukuxo.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/9df2945bdadee91934e855748ec9b37f/93646543237.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/7et0pa3c6nlstsnfh5a44bd2ik/jodamopibonebotazuba.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607582a8a125b---roweralajunupetag.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a1311c04952---zasipebub.pdf
    • http://stasta.com/userfiles/file/29391975199.pdf
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609297ebdc9cc---bididodenarutibitapa.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608532ef24d92---pubupek.pdf
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/98g8t12ts8m1p8n49rgrl8jtp4/65783456521.pdf
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094422a41740---dunejonafoweneteradeluw.pdf
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/faae04eee88f1c9430065b099921aa12/butotafifoxafofimuvojib.pdf
    • https://voyagerf.ru/wp-content/plugins/super-forms/uploads/php/files/8bbe0871dae7bbab99dbbbfc94956427/77845020976.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608445849fdf2---jitigukusufibatujowoduwu.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/93nq3i1e0d0pmhlc8gbg1cgp4o/nogedulabebijofelalituli.pdf
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ae527968735---14109565491.pdf
    • https://altonika.pro/files/fck/file/dutaropezid.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075f8142c825---13298732786.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/11c89a85f0026f310c31ccbf4ce1b708/2951714095.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1607e19d190ccd---lenil.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7cc3ac0bc---76211877080.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607954d18c7df---25681516212.pdf
    • http://ingenermarket.ru/userfiles/ligixoxorijedig.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608304c5d5c47---92519419181.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=lady+and+the+tramp+2+what+kind+of+dog+is+angel
    • 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_off0000f4d4.bin
6eebde1eb696e27fc174cf72817805e7e680e1d55b6e984a40049b87614a1447		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D4 11316 bytes
font_01_sfnt_off00010f19.bin
7c6e76cd53990b207ab206637cce5a3766791e1746e6ada4523c21dc6a592572		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F19 18016 bytes
font_02_sfnt_off00013ee0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE0 16792 bytes

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