Malicious PDF — malware analysis report

Static analysis result for SHA-256 123c39cd6edc8e2a…

MALICIOUS

PDF

72.1 KB Created: 2021-06-11 05:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d72209cc157f73dbb32a3f9b3b47ef1 SHA-1: 234e4fd28efcd932627f83908a006620e9ebc77a SHA-256: 123c39cd6edc8e2a440295a9872abba7a993239cd9b4fcf257bf5460cf99a0e4
156 Risk Score

Malware Insights

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

The ML classifier and ClamAV heuristic strongly indicate maliciousness. The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute malicious content or phish users. The document body's reference to 'lalisa manoban' is likely a lure to entice users to click the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pistant.ru/uplcv?utm_term=photos+of+lalisa+manoban
    • https://careersourceokaloosawalton.com/files/public/54075449589.pdf
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/80df12464fc3d464766548b295be4991/jilujejimedojaxuv.pdf
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609975b029e18---87051493066.pdf
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/fbstk9mujsog001lvac9bd0tet/japivoxivanej.pdf
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/88fbeec5553c75bba0e443a3539d8097/munupopafiduguk.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/p55qgqh4qlvau0f6q1verecm22/78751985830.pdf
    • https://alutat.com/data/file/dowewigibiporekusuj.pdf
    • http://auxerretv.com/content/public/file/88511857613.pdf
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77534837c6---kazavumufabivovunowiri.pdf
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/mk8peda6o1bqlf094c5q7one67/sofazopofidabaxanaworud.pdf
    • http://notarbrazda.cz/userfiles/file/sozurojuk.pdf
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/da5ef901672910a172c648a9e0ef19df/42769064610.pdf
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/41104da8bd37efa7b5cef80df747399b/putepudiro.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/6c6cbfb68c41091823f64af4567ac896/nafarerugokegozesozobete.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160acde918bfdc---ligufusubutak.pdf
    • http://quickvideo.nl/userfiles/file/33149380440.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/ih3bn877n0rhnko2b0s2i7ngli/rebedasuvekewolawekomajid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db3a.bin
62eb36e117f0f2b15ce8c9a9978614a205aa2b37a379a98e6eef1b44526913bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3A 5052 bytes
font_01_sfnt_off0000ec46.bin
0822f190cf0e8d767adf6de924bfe439aae78198f8818ba56011613016dc668c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC46 11176 bytes

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