Malicious PDF — malware analysis report

Static analysis result for SHA-256 9825206a8ac89449…

MALICIOUS

PDF

72.9 KB Created: 2021-08-10 05:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 31e2918e4073c421d08d64930ff4b6ce SHA-1: d335831fc78c6e622c78ba78a41d059b2b81642e SHA-256: 9825206a8ac89449329ff2fbec246601b283288f50bf31bc0ae4db6580f1c455
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c16290af64---9254001813.pdf In PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/s076rvudeqbhpbp6gj167qhsh1/jofasepibe.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/moxojabata.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/bawevakosarizoketa.pdfIn PDF document text
    • http://designbeginnings.com/upload/file/kenozapojadiritaj.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/xewegonaxasitezu.pdfIn PDF document text
    • http://smolensk-bakaleya.ru/userfiles/file/lavososufe.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/292146301080.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/62809558845.pdfIn PDF document text
    • http://netpost.vn/upload/userfiles/files/92421333835.pdfIn PDF document text
    • http://mopi.eu/ckfinder/userfiles/files/6247934571.pdfIn PDF document text
    • https://batikatravels.com/userfiles/file/41317032586.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/0a13048150e820e5aaca976b8dc6dfd9/62993889940.pdfIn PDF document text
    • https://discovercefalu.it/_data/images/file/83284538911.pdfIn PDF document text
    • http://norrlandet.se/userfiles/file/40337034743.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/4o9cd3ss6l4qpl87jf6em5n7hh/papuxu.pdfIn PDF document text
    • http://mariangelesorrico.com/galeria/files/75800416329.pdfIn PDF document text
    • http://rchs1964.com/clients/5/58/580abc73d3aac4ea3a2bdd7c75327783/File/sebowokokeg.pdfIn PDF document text
    • https://jambukuning.com/contents//files/jajufagerafedurabi.pdfIn PDF document text
    • https://marbellamohali.com/wp-content/plugins/super-forms/uploads/php/files/f08bfaaadc210be59c86b3b03d372a36/39395980285.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607313d8a87a3---8266493731.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/403e8b615ba742d86656fe7cbb5dbcab/8785930434.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=examen+de+simulaci%C3%B3n+comipems+2020+en+l%C3%ADnea+gratisPDF link annotation
    • 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_off0000b75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB75F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cf76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF76 11484 bytes
SHA-256: e26a21edc7ee34922ce6256925d2b7e9a16affba21e1061d76579309945101fe
font_02_sfnt_off0000ea21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA21 16476 bytes
SHA-256: 1b2d4a284b9bb1ca913cfcf550e362b1088887a9ff66f404e2ea2ca79a34231e

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