Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b10e1715d94f760…

MALICIOUS

PDF

90.2 KB Created: 2021-06-30 10:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d9facc708232f4035d2d298a5c51b2c0 SHA-1: b3f1bbd1e0c098b64d42902815f9d6e591cfaaaf SHA-256: 1b10e1715d94f76074f663dcb35ca85509f50775c0dc7aa844378c92e19da8df
156 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised WordPress sites and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://amitadevnani.com/userfiles/file/kotozigefuxibif.pdf
    • http://netinflux.net/userfiles/file/wijekowux.pdf
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/pjvkbp4roaqsi93svgtrpvgk8i/24767445552.pdf
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/to99bhleh00pe3elvnr46fdl3n/zusejizufirurobetolozu.pdf
    • http://kiuruvedenlukio.fi/tiedostot/file/xemozotodamo.pdf
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/5e4b0c06632af78c1543f552a47b3291/kuxixogejekanoto.pdf
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cc52e3a0b4f---69036364262.pdf
    • http://agiusfuneraldirectors.com/files/file/55370054996.pdf
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca82574112---datibotesudal.pdf
    • http://rauvuonsach.com/images/uploads/files/muxudebebakedogutomev.pdf
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608268b7336ec---giwawo.pdf
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607344ad17f5e---pajowobosamedexore.pdf
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/tpj624h29p4s1jqa69f7o81sfc/23132851501.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083c1d089b0a---tuwemixugegilisabav.pdf
    • http://vivatbacchus.hu/files/file/lesejodumuvogujar.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe8fc9cac9---11792068760.pdf
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608664a7b533b---72866959372.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b305ce5482d---tikazakaxegeto.pdf
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/rep6fd4vni89e6qhgirgnj278anl8nd8/45936179505.pdf
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/b350d161d497259ea9521e85553699f0/17657032094.pdf
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c9521b351---duledafurowov.pdf
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c08f4213fc---25580620032.pdf
    • http://santeh.md/img/files/26369164045.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d496cb6be---penopawul.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d576c2cd4b5---vexefoled.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c54cf3ef5fd---24278471820.pdf
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/8ab9ecff26e72a99d9bcf9e843da00b5/jerunimixevudulomop.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/5159c5b69fda6a85d5d242b9b7901bca/7398078241.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=standing+offer+indian+contract+act
    • 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_off0000fe0f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0F 16792 bytes
font_01_sfnt_off00011621.bin
2f166ddd4d936c58b7f25cdfb92dabcc3571aa6dc6fdf0c9962b619a83433f24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11621 17252 bytes
font_02_sfnt_off00014326.bin
976430305e937458bace3d041731f2e26318cb2e7c511006199bf9dcab4db5ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14326 10512 bytes

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