Malicious PDF — malware analysis report

Static analysis result for SHA-256 be69699f10d66f1e…

MALICIOUS

PDF

87.2 KB Created: 2021-07-02 05:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ed542f42a9181b1ad47bd326a2ff19bf SHA-1: fcf2614232936f9bb8a9c7d5c3211dad840ff310 SHA-256: be69699f10d66f1e5a0f66a5842759955832df41b12e8aa4384eb63d94f458a7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The file also functions as a link farm, directing users to multiple compromised WordPress upload directories. These links likely serve as a distribution point for further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160870a71a4310---61364731935.pdf
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/67dd4fc8af92bb0d3c019b0788c29bbc/71733852317.pdf
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/b7cdbc644a6d04fea7d9dcc473af4a6d/vezufofexati.pdf
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee5e8d383f---gekevijigimakirujale.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/185edf485468983445316b7483653980/wawemejagoseni.pdf
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/so5u16t7n8jaugeqklqde2jjt9/fujowovagogabekejo.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087c98489de3---21243390796.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/0ae48a006250c6c70e7d53e0c0fa07f6/93784191075.pdf
    • https://coevent.ru/upload/files/sinafozoxexumamolijafatot.pdf
    • https://go2germany.ru/files/file/51558747391.pdf
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/b7mal3gf4ak1v98l7ol8ofisp4/gosarigagawonuniti.pdf
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/bumij.pdf
    • http://greece-ex.com/images/blog//file/41272536680.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/78c60ba9eaa08499a2313886460ad670/tinazejuvanixukew.pdf
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f13feb283---kotarabivakugumodujowu.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609d143271457---lolowitede.pdf
    • http://cardealer-space.com/js/upload/files/25806849143.pdf
    • https://tkquiz.com/userfiles/file/dovilunizagibifevaga.pdf
    • http://jevades.com/aircraft/fckimages/file/10051253042.pdf
    • http://saatgaamkansarasamaj.com/admin/uploads/files/vigezimogaf.pdf
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3c577fa36---15142498260.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a39cd2e6670---12397093900.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bded276b5dd---81767612757.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d51154953---didakanenala.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=rural+to+urban+migration+definition+ap+human+geography
    • 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_off0000f227.bin
3d60016b39b9b09dfca97b5374ab8e4db84578c56f5fbca5b8f7ce6da3dc95f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 16760 bytes
font_01_sfnt_off00011da7.bin
2dbec083d4dfce3ebe61305c7f256f58943d2ff8958c61d65a303f0ac6ff57c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA7 11176 bytes
font_02_sfnt_off0001372c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1372C 16792 bytes