Malicious PDF — malware analysis report

Static analysis result for SHA-256 954a1d112ae4ab53…

MALICIOUS

PDF

206.4 KB Created: 2021-06-30 07:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7ff14f40191a8d414c52c62a27815d4d SHA-1: 975ddef5a0bf07d69c600c9ed2d2fdf36df9e70b SHA-256: 954a1d112ae4ab532bdf7f424717931af6f4d4056488eaddf081f4024319dcad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, specifically targeting file upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and link farms suggests an attempt to redirect users to malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9808

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.
  • 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://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/0958207f6a58fe117ed479b0eb214d4c/lejesatezonokujurediwe.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099cea6ad0c6---nanafusavidodo.pdf
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160845acc33c3e---89921665915.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087852c37ffe---wekesebaxetamexuxuteton.pdf
    • https://basisnomor.com/contents//files/weraben.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad24c915c58---5436909073.pdf
    • https://licorne-hotel-restaurant.com/userfiles/file/zopibezebeguxakula.pdf
    • http://bajajsports.com/userfiles/file/velafoliwupezelusakozotow.pdf
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/a3f8741ad376abcec25d048823faac07/91110094165.pdf
    • http://www.allatpatikapecs.hu/images/file/40189015190.pdf
    • https://tkquiz.com/userfiles/file/jodazonefejutelag.pdf
    • https://karapinarinsaat.net/userfiles/upload/file/62169994558.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c3f083a3e---gosopukok.pdf
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/3oj3c37k1qe4dgqkcth9av81u6/radazilodokix.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609da5dc4e7c3---93360624942.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/8fbb7163a580ae5118b26488246fdf9d/48159116844.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877731c1a21---bobelositakoxumefurini.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16098f9734521e---90671659964.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/aiss95or6m66vekqcn1442vv5l/85854627601.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2050f4b673---87361709187.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/e4ea8a0ea5638c74369e99f7edb9c41c/bimatike.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/prt8mr5ilaq9rc464g0106rk58/4365726368.pdf
    • http://verdantnorwich.com/clients/3/30/306756bb587dffcd11ca74610d845a16/File/64518753030.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098468608549---18301810207.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=chopped+with+bobby+flay
    • 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_off0002c7ff.bin
34574a2f928b2a6a4b190172ad95c4ef57fc102c9693b7f810e32054ab098ff5
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7FF 19800 bytes
font_01_sfnt_off0002fa1c.bin
52c137a5335a9b965f0f3b5a5287ae1efbc28daff64f5fefe439adb4cb3b29ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA1C 10596 bytes
font_02_sfnt_off00031250.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x31250 16792 bytes