Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c2dd5ba8dc29a7…

MALICIOUS

PDF

83.9 KB Created: 2021-09-10 09:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 77846e4bea8a0aacfda7b5ba867ff154 SHA-1: c59a961b05be08eb78963a5d56bff531db5b4886 SHA-256: c9c2dd5ba8dc29a7420c9455271e37c0d3b013cf7f9a229e45bc69ecbc4003ef
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • 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.
  • 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://allytemp.ru/uplcv?utm_term=shdtv24+fifty+shades+of+grey PDF link annotation
    • http://wadirumshootingstars.com/userfiles/file///86656245697.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/rirozifu.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16137d8270c5a0---32462216401.pdfIn PDF document text
    • http://mamitobe.ru/files/file/zomusemafomarewamaj.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/38190065604.pdfIn PDF document text
    • http://mfcpavpos.ru/file/zojelulikopulasusebuwerud.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab0bbee7e3---41113515566.pdfIn PDF document text
    • http://www.srijonihealinghome.com/fckimages/file/5425835462.pdfIn PDF document text
    • https://ises.ca/phpsites/vertical_living/uploads/file/12819490732.pdfIn PDF document text
    • http://roland-toys.eu/userfiles/file/63815754628.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/40104886350.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/rabali.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139641359813---sosun.pdfIn PDF document text
    • http://bociany.sk/media/file/lawikuxofivelidute.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161377338c63c6---58761683381.pdfIn PDF document text
    • http://yomamasushitogo.com/uploads/files/46961373584.pdfIn PDF document text
    • http://ladna.pl/user_images/file/togujobamowojam.pdfIn PDF document text
    • http://fairway.cc/images/blog/file/60559854556.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/8m8kiujk6thsg4nbg3otu0kaet/2034823413.pdfIn PDF document text
    • https://kligi.viart.lt/ckfinder/userfiles/files/vusoxipawuzexezokemolilu.pdfIn PDF document text
    • http://dryoucosmeceutical.com/userfiles/files/wavilelaronilup.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/96022938394.pdfIn PDF document text
    • https://medbillings.us/lightspeedweb1/file/fudalobe.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/1818b744e98050362fb2491ff0b64c9f/14958616612.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/fifotajopizemodat.pdfIn PDF document text
    • http://kleni.cz/userfiles/file/kuwemovetijopudububixa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D1 10936 bytes
SHA-256: 5da0fe7f99ff4e196629ff0b92fb11acc536dea9370ed641d1ce6815b3fe4a87
font_01_sfnt_off0000fe3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3D 16768 bytes
SHA-256: 3f6d6f050b417b7f891d2a798acd2009111c370add4f8bbd18cb0a1c639a5c49
font_02_sfnt_off0001298c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1298C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1