Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc08f240e19a2e2…

MALICIOUS

PDF

71.5 KB Created: 2021-09-25 22:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 93b2ed14b916849b5b8e3ee93af39e78 SHA-1: 2518540110c6a372ec83b8f8ab6f9907ce216021 SHA-256: abc08f240e19a2e2ffbe01819ba79b7d12513a9d96345815bf1234931df460b9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and a link farm pointing to compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The embedded JavaScript stream further suggests malicious activity, likely to facilitate redirection or exploit vulnerabilities. ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://irlanc.ru/uplcv?utm_term=fx+player+pro+apk PDF link annotation
    • https://hotelangela.hu/userfiles/file/48021614959.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/a1ba6155daaa7348f471f75aa54783e2/12051441019.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/161341986777ec---lutelesasavorosekuz.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/98817833773.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/27125618213.pdfIn PDF document text
    • https://ski-valloire.com/ckfinder/userfiles/files/tagozigaso.pdfIn PDF document text
    • https://rajakeempat.com/contents/files/nobikejimevidefuxifufo.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/18953332351.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/jabugepadebadixir.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/9568719fc0d1241e44cdb2e1e505d53e/lafatavije.pdfIn PDF document text
    • http://dallard.fr/ressource/site-image/files/25662645407.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16139e2b4d8e91---1334049140.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/jevizubafufifatemepig.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/56274574308.pdfIn PDF document text
    • https://lnpro.in/ckfinder/userfiles/files/baranu.pdfIn PDF document text
    • https://tinhhoaxanh.vn/userfiles/file/faxigabimesedukebofok.pdfIn PDF document text
    • https://oncetrabzon.com/resimler/files/fivexaxuxevetu.pdfIn PDF document text
    • http://doremimarlikinsaat.com/userfiles/file/fakepotibelozabejobegoni.pdfIn PDF document text
    • http://lctrading-gmbh.com/ckfinder/userfiles/files/43758498632.pdfIn PDF document text
    • http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/wejudemumuxalal.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614889dbef8eb---dopefedirovewej.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_off0000b276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB276 10068 bytes
SHA-256: 7bd7fb146b2a8c90d329e908bc5cdda146246db825d6e4a74c76b369fd6f18dc
font_01_sfnt_off0000c904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC904 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 18108 bytes
SHA-256: 3e79f66231754588da12922c91bc4efbc276496b132a9e919013809cab362bf2

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