Malicious PDF — malware analysis report

Static analysis result for SHA-256 45da7d9bee2c2a71…

MALICIOUS

PDF

70.9 KB Created: 2021-06-05 15:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d8238dad07b5bdc2a514c88a808f68 SHA-1: f298db84eeaba882e9ea56316c616ca71ab5b5ce SHA-256: 45da7d9bee2c2a7151d5ab2d97217e65834911d1161560ca9b71aa3448795447
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

The PDF contains numerous links to external websites, many of which appear to be compromised WordPress upload directories, suggesting a phishing or credential harvesting campaign. The 'SE_MFA_LURE' heuristic strongly indicates the document's purpose is to trick users into providing sensitive information like one-time codes or MFA approvals. While no scripts were explicitly extracted, the presence of external links and the nature of the lure point towards a malicious intent to exploit user trust for unauthorized access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://garglob.ru/uplcv?utm_term=afk+arena+youtuber+codes
    • https://alianzatours.com/imagenes/file/85998190142.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b66c591df8d---33946967698.pdf
    • http://kimbuunguyen.com/uploads/userfiles/file/30512322265.pdf
    • http://clubselectionvoyages.com/images/file/47355259787.pdf
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866cb819112---bosuwujepukudapovaputo.pdf
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/4708898550.pdf
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/736f9e2ee35e0bade60f8a683c5511c2/77093131366.pdf
    • https://fcr-fomentoconsumoerenda.com/uploads/files/45168853665.pdf
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9a836ee9b---94643095356.pdf
    • https://techson-cctv.com/upload/file/jetalumofe.pdf
    • https://service-panev.com/userfiles/ruxakarigomaju.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/492625b6228c1938a49590195a356154/63097951054.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087924159117---pizajojufujidefefi.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f75f3ba723---24207791755.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/ccd47f6d977de66f0836db4ec6358c6f/xovukonakamukufivujilawel.pdf
    • https://panificiopasticceriabattaglia.it/file/davotete.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/cklh0qg21l60aev82hjv7jmdu3/nipipomepe.pdf
    • http://extracam.es/app/webroot/arxius/file/74020446307.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d830.bin
67cf033085ff9bdf12f50318a0996cc4d57667cc6736a5f8ce6ff098d9cf5e1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD830 5276 bytes
font_01_sfnt_off0000ea42.bin
685b968e3111814659c60e0f691dab54d00fbc04e1c77f96376bf6fca1d04adc
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA42 10540 bytes