Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe54e2a05cbf0c6…

MALICIOUS

PDF

86.2 KB Created: 2021-07-01 00:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: de1e4930b363f21fd8a22254da7433f7 SHA-1: 408cd082d092aa3e3a711fa48591d9d8128d2254 SHA-256: 0fe54e2a05cbf0c60a990a2bae89533b55cdf0d95caac676046b68e956abeafb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external URIs, many hosted on compromised WordPress sites, suggesting it functions as a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous links point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://nomylo.ru/uplcv?utm_term=switch+steal+unwrap+gift+exchange PDF link annotation
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/0e67b018a2b998b943ab78f6e6d08d1f/nakarubixor.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/oba2p10ogsj4bb17cu9ecqs2ir/goxotekunegipufiwaliw.pdfIn PDF document text
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/a7c2e97f7fc6789bb967d33a5e6c8ec5/89515790541.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5302813556---53152782942.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/novesaketuzoz.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efbb7d6d3a---tavalifikujogetasovi.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608742d5a7ab6---xenokaxepazevogosub.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/93a6c9404851f5448feb33b5f9f16dd4/11207090192.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160954bd76d94a---37030946727.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbf2bf1d92---xozanilagivalamuloteri.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/288e63f0cb97f29d7dd80457c1f40d19/79533187017.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/vukurovubakowozexovirota.pdfIn PDF document text
    • https://ibrahimkoc.com/images/Media/files/poguxamefusufawes.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6434ca4fd---puvedebodilonoramib.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/vajuridojixobagonevo.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/703035f12601426046bb0734bb3dde0d/8101789215.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b25ea0a0086---46837452979.pdfIn PDF document text
    • http://vet-arrighicolangelicristilli.eu/userfiles/files/jafuw.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbffeb4388---78205500955.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/7b7hda75a11p3dsg2lnlfufo34/31719472570.pdfIn PDF document text
    • https://sanaspinler.com/calisma2/files/uploads/sujizazikel.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/7e6c9af2b8c739b3d3d7619a75be96a2/14505459459.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/52567857628.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_off0000ec23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC23 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001043a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043A 11000 bytes
SHA-256: ef721bb7ccd3e1cef39fa6a409ad07065f6a79a881b907c1462fe05ba6346a5a
font_02_sfnt_off00011dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC7 17484 bytes
SHA-256: 18d7d85a76f8286a660917914b74127cffc2f7bf3b8186ed6d79e627a62092f2

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