Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2541f76e99034d…

MALICIOUS

PDF

68.8 KB Created: 2021-06-21 15:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 734c4f48d0468e65d838a5bdf2de797c SHA-1: 24ce58e0b04f62b8b205b44de888cd01dfb50f68 SHA-256: 7e2541f76e99034d898e33bb5bd77936e2f287a007d8fb41b8597bb7577df3b9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and multiple links pointing to compromised WordPress sites, disguised as a movie download. These links likely serve as a lure to download further malicious content. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/c64a952a85b309608e3f8fe65be3e7d9/24399038749.pdf
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be3080e09f3---wopizij.pdf
    • http://musclecar-taps.com/js/upload/files/40152188161.pdf
    • http://sbhs1967.com/clients/8/89/8985ce50e7417da620f75e2af787291b/File/mirijexisejoxavofug.pdf
    • http://nano-vip.com/ckfinder/userfiles/files/gorebufomoxopuk.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/56455f73f2c9ed3ebbdca15fc53a6beb/domoxivumusaragalekexuk.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f50654359b---gelimejodizava.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608da5b4a1224---36410902334.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/dee292cf2e5c38dcdb17139e98a83056/jivokajitibimutoteb.pdf
    • http://proxima-design.cz/files/file/86966071508.pdf
    • https://willmarlakesarea2040.com/ckfinder/userfiles/files/guranedozogufub.pdf
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607307cabd7d5---bozowufadekolad.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7b7416937---kawavonatukaze.pdf
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/80247083614.pdf
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/b31a5d02ae713e1ec19f5df11b4cd56b/77515169491.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b592552e852---63987483361.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=laaga+chunari+mein+daag+full+movie+download+mp4
    • 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_off0000ccae.bin
183934fc56d69168c0d15bed60a48cfd8ee1182b1bf7e09fba453f0664e1d044		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAE 5572 bytes
font_01_sfnt_off0000df9b.bin
2c6e98afad0e35ddbda8c5532eba81dc903f148d03853d3ba051dbc7f562bb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 10772 bytes

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