Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe35c31e1a3f53a…

MALICIOUS

PDF

83.0 KB Created: 2021-07-07 16:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 52789a514449c96d26466ec06505e5af SHA-1: 374f57c7473c47ca6103a38ce823ead74e977f23 SHA-256: 3fe35c31e1a3f53a34bcae2c1c8bcc7c4c4b2ca1b1e4f684630135d53887afb6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://synerhu.ru/uplcv?utm_term=moratorium+meaning+in+tagalog
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d8fbaf6a---75473449855.pdf
    • http://birzebbugastpetersfc.com/files/file/bamalujije.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9066600cb---47661197321.pdf
    • https://nepalimodelagency.com/userfiles/file/dazaxarofuzajibivewefuve.pdf
    • http://ikhmongol.mn/ckfinder/userfiles/files/12073847003.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/28f2243f7fa22a4d36f27df0cecfa687/kagipasadovolom.pdf
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870b6bbcb31---xarokuvipirojenofexefoga.pdf
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af60b71803b---mesagilutib.pdf
    • https://pensiuneavalentina.ro/app/webroot/file/13832444682.pdf
    • http://koreaseals.com/ckfinder/userfiles/files/raboromepagoxorowawixoza.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/567a24c3d0675e09227c9ba30f44ad3b/98766724534.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/1791006848a39598f1a61aa759371513/fuluvodiwurutakikixep.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/88d35cfce4ec25e7369bcbf199092788/51360782282.pdf
    • http://jyjwqj.com/uploadfile/file///2021052703401570.pdf
    • http://geredekombiservisi.com/userfiles/file/mowebixuvojogolizekosi.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d03285c7e74---50090296850.pdf
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f37ea491dc---10019113610.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f3080faba---lebulupawejotebofena.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acbaf17f286---7628018354.pdf
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/1eb5586336f78a39653e6cf752ff83a3/20174721978.pdf
    • http://simonhoirup.dk/userfiles/file/11607164320.pdf
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d2e7b1838---tamutu.pdf
    • http://zcapitalcrm.com/app/webroot/uploads/files/21084629617.pdf
    • 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_off0000e390.bin
9fdd4d00c5e487c71d2afea44faf95d40a61bdac4424457bcccaf96e0dce0ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE390 16792 bytes
font_01_sfnt_off00010f3b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3B 16792 bytes
font_02_sfnt_off00012752.bin
72f68a8f9521504bd265bf323de4f6a0d133933d406383504d717cde49d57d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12752 10376 bytes

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