Malicious PDF — malware analysis report

Static analysis result for SHA-256 694984a0320925cc…

MALICIOUS

PDF

79.6 KB Created: 2021-06-26 21:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 527f0671f057379089772104ea41683c SHA-1: 6d6c351bf2ae6d70455e19196f15ec6a11ee8d12 SHA-256: 694984a0320925cc57f315cf0be7c4d712243add97110897f1bff741d01db1c0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external URIs and link farm patterns, indicating it is designed to redirect users to compromised websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://drafthe.ru/uplcv?utm_term=ishq+malayalam+full+movie+online+with+english+subtitles PDF link annotation
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609110767bb82---xoxagozexidesomosozifuwug.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/vevef.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/jvci2ao1hqna25s7r37g3vqub3/falovasanudataferenaneze.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a519522ba4a---duxobizizipejakerugiru.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/1rg8vrietgbcgkuc2lm1n2eth3/jifazavatol.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b12649a271b---majegokebepufewomozup.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/86b77db63277859e02fad8125609070c/2765093269.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/80794088891.pdfIn PDF document text
    • http://hokeypokeychallenge.com/clients/7/77/77ac66e313b6cb4bf602f1678accca72/File/fewusejowo.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16082c7171f58e---62792270110.pdfIn PDF document text
    • http://cloverpark1959.com/clients/51168/File/65791695512.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16094ae5dd7dbf---56343276664.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/pokebegexexirik.pdfIn PDF document text
    • http://doubles301.jp/files/ckeditor/files/62482157741.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb18f0b7b03---25518528848.pdfIn PDF document text
    • http://sochisushi.nl/survey/userfiles/files/taruxotatubojem.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/leb9ecuqvgqn6tkohopjbijg1v/berilutufifejepo.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/84kn2362gcdnm86o1cnih6piu2/kililinuxatowizamo.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/21d8a4682695cdb7d79cf85ef78ffbd5/zemimogelizezerifowalef.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160917edb19abd---92538739328.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6f9bcac46f---nojaja.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/rv139k657s6lo9iqgu5orq9ll4/18097253932.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/fuxinebigobad.pdfIn PDF document text
    • http://musiclivemarsala.com/userfiles/files/99572908420.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD173 17420 bytes
SHA-256: 9b1c183bc4cfb1d10e083c3ae60ae2a5fc3be6bf8f185df452bbe95b6440265c
font_01_sfnt_off0000fedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDC 11164 bytes
SHA-256: bab91f1097d1bcb72001f2a9dee057ae628ffe3d99c209e6ad1cbefd2f67381d
font_02_sfnt_off00011893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11893 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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