Malicious PDF — malware analysis report

Static analysis result for SHA-256 212f662787aaf588…

MALICIOUS

PDF

86.4 KB Created: 2021-06-08 01:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c986afdc11ded4d1bdd196ac7c7a8a85 SHA-1: c8f79a800dfc540d74e7a119095acfdf44a174bd SHA-256: 212f662787aaf5880e6abbb5a5c3367bca6a49c6158f1b2a3ca05daac081a98b
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious and contains multiple links to compromised WordPress upload directories, suggesting it is part of a phishing campaign. The document body, though heavily obfuscated, contains text related to downloading a movie, which is a common lure. The presence of external URIs and links to compromised CMS uploads indicates a phishing attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9423

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=download+film+fast+and+furious+9+sub+indo+mp4
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/qsb9f0fikgkn83u9jf912u0ti3/bufiwilalarotoj.pdf
    • http://agnieszkapawlik.com/userfiles/file/negudumetavok.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073417cba86e---41133791110.pdf
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/8kimjqr4c7435jksijhiu2cet5/bakerigerap.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160781ab430a63---fukibemegi.pdf
    • http://mujuerp.com/uploads/ckeditor/files/20210608052501.pdf
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff563d6116---walibinetufefuf.pdf
    • http://indel.sk/userfiles/file/gimigoresowoniwivamare.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/bn3l2tov91mst8a84gbilr5pf1/jevenefanuvosan.pdf
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/673b8cd89690d4724fc26cb9eb7e6a26/99000261683.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a579bf5e8c9---refejaxavitiburivexom.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083eb261429a---duvizifeb.pdf
    • https://accuratesearch.com/userfiles/file/dakukokimugol.pdf
    • http://andlupa.com/userfiles/file/lonefosidus.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/hjfjskake44h2cabd82v1cncl6/zawibejowapelif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e604.bin
329505d60b738dea78563533f46484efc63789f1f401cc9b270741f9634a5acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 5428 bytes
font_01_sfnt_off0000f858.bin
f391dd35efaed05b26d39d37aec1eed06e0a81089434ea3fc8ace6e15dc0aa4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF858 2636 bytes
font_02_sfnt_off00010391.bin
d0834c5790273017676642c574a6349ffad36c8aadf245190880b8e25d063f75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10391 12464 bytes
font_03_sfnt_off00012b99.bin
bfe14f2a02e4d09b16da9d595e9006f40f2c98177963fb2db39c2a1d3cbf1e21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B99 17504 bytes
font_04_sfnt_off000145b9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145B9 4324 bytes

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