Malicious PDF — malware analysis report

Static analysis result for SHA-256 509084c06ac60379…

MALICIOUS

PDF

72.2 KB Created: 2021-09-08 01:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: e18381125ee48950f50c0b48ebe8ecc1 SHA-1: 667668a69482bc9af8e8a7759479e70ec35eac56 SHA-256: 509084c06ac60379fbf79b90b071c16c1afd99aa45811cc94b011aeebd87233e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to redirect users. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this is a phishing or malware distribution lure. The ClamAV detection and ML classifier further confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=inversion+temperature+pdf PDF link annotation
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/piterafuxixedirakexaxa.pdfIn PDF document text
    • https://naoshima-habitant.com/28352472180.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dde25ac8f---gitakojabodadube.pdfIn PDF document text
    • https://prestinieurope.com/userfiles/files/fadimufum.pdfIn PDF document text
    • http://cgpreceptor.com/ckfinder/userfiles/files/kuvisanilodudaxowa.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/xoxowazadaxatejerijaje.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e12901906d---62541916927.pdfIn PDF document text
    • http://altronic.pl/!mag2011/userfiles/file/joreforejuziguwusiza.pdfIn PDF document text
    • http://yejiya.com/userfiles/file/lazokakotajotutogepubegaj.pdfIn PDF document text
    • https://ksmt.edu.np/assets/ckfinder/userfiles/files/44353625008.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/19cf281a0c1b2afeb7563dec06d09c0f/darosapubevulavoxalo.pdfIn PDF document text
    • http://fructusartis.com/i/File/lokakuxepivogakow.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8c47d0441---vitujeto.pdfIn PDF document text
    • https://sleepthai.com/piceditor/file/14382977396.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075eba1aeaf6---10482573339.pdfIn PDF document text
    • http://setadijital.com/img/userfiles/files/lozukizuxifomozunumefu.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/54045810905.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/a0bb30a9ee06bcf5720dac289ae1e391/vevebivini.pdfIn PDF document text
    • https://yenhuy.vn/upload/files/juwon.pdfIn PDF document text
    • http://kvrhousing.com/uploads/20543729437.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/e220e271d123fdb9496ab4034c9a1a8d/xelitolubosuwoserov.pdfIn PDF document text
    • http://hargrovefamilyreunions.com/clients/16272/File/44356043992.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/e70ivt08g8qvuj3fu7h3hjb1pj/92582566896.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/f7891020d10afcf7a52b6138a4714054/menisuxiwumuxeserixese.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_off0000bab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB7 15440 bytes
SHA-256: abac01fbeec1558f3349714db7271b136de94917cb0044d60854884548a2397a
font_01_sfnt_off0000e259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE259 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fa70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA70 10728 bytes
SHA-256: 50602c42fd448cb15fff70b580ca6cb652d7c9a6f3c065c12b7b787fa72fc6f5

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