Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11369f776d95188…

MALICIOUS

PDF

91.0 KB Created: 2021-07-07 00:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 362e7c82364ecedee8dbbf2bb74f76eb SHA-1: 6745bc2b18410d141371ea205fe3081c0e56f0a0 SHA-256: e11369f776d95188677973bfa399ff3c58cef9399a76fe9748b525ca34dad180
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Numerous embedded URLs were found, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm or phishing lure. The presence of these links indicates an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

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 http://anandtouristcorporation.com/uploads/fejuvigo.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16070e8b957f06---bogar.pdf
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16077b284d5529---jenikofoni.pdf
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/95e27832993d3af1076ed8ca98e868c7/13836807599.pdf
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/51674813536.pdf
    • http://ekotop.eu/userfiles/file/lalinesekokosumovo.pdf
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7d235d641---visirejakamemugo.pdf
    • https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/6a5b7e7acb6b996da6742f49aeeca2a4/27716002171.pdf
    • http://lucavolpicella.it/userfiles/files/fodow.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609caf92d6db8---64556130228.pdf
    • http://patp1ryb.ru/media/file/lolawegiwotas.pdf
    • http://spamsmsgiare.com/media/ftp/file/tonuwitid.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/ec3337a57d3d1e0e13d749a16c1aa0ef/20383756328.pdf
    • https://aedwea.com/upload/foto/91425376445.pdf
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/98e10f734cb764a97453b0191325b531/zulidavazusube.pdf
    • https://menlopark.com/wysiwygfiles/file/dikotimitipelalemufomax.pdf
    • http://epoxidice.ro/mm/file/mivejoluvebexipetavejigo.pdf
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/r6bmqv09tcf2hpeo28dghu5a3h/27776588272.pdf
    • http://guitarenko.fr/img/files/20181164765.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c30926cec0b---12652170099.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3f1be3217---94865353331.pdf
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7363994d2---7338838172.pdf
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/e32d10e720f929a0d4688fe93180ebd9/jevopi.pdf
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/0ad8f7596b748916628d532ea9bcb761/53060234721.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd26b7af7d---40297092219.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/6b8106420760e8299e1c4d6be2e8ce4f/bususam.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/73799c557c30ea2e1cdd656c6ea25eea/majujeboluwopavuxuge.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160786e5ceb482---43522585847.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=call+of+duty+black+ops+apk+free+download
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f26b.bin
f0f0b9afa7a76a16772f04f03c7344fc91553ce27571a86d3863f14266b8f2e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF26B 11084 bytes
font_01_sfnt_off00010c55.bin
3e54697433f258519e59b5d4193970bd3702f67e639bb31f2dfcde737eb7fc9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C55 1728 bytes
font_02_sfnt_off00011482.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11482 16792 bytes
font_03_sfnt_off00012c94.bin
b18f831891f5d5e8f357148c9133d52bf0014ffbee22ad56ce8c748432fcdaf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C94 18100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.