Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d31a771216637e8…

MALICIOUS

PDF

74.5 KB Created: 2021-10-10 04:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: c26f9a243a38041fbf75aaa9b1b88a49 SHA-1: 7bc4d2d70ecd07a62264c068b91b765dddcedd3a SHA-256: 0d31a771216637e896115e3e9410e074b97e592209db3494bc9d9a5b306ddeff
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://smidgel.ru/uplcv?utm_term=famous+progressives+today PDF link annotation
    • http://af.ssla.ru/images/fornews/files/75892883816.pdfIn PDF document text
    • https://khmernative-rice.com/userfiles/file/28591586674.pdfIn PDF document text
    • https://locktactyuma.com/userfiles/file/ratipox.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/paluvutobunibejudonaso.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16147aaf868538---mutubazelijaja.pdfIn PDF document text
    • http://kimhoatra.com/upload/fckimagesfile/xonawalaleratufexire.pdfIn PDF document text
    • http://slsnn.ru/content/files/taxapazugigubogutubobu.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/87133282817.pdfIn PDF document text
    • https://webkapper.nl/ckfinder/userfiles/files/28030042933.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/422db7e071cee2b70649c59f4e06238c/vazizawo.pdfIn PDF document text
    • http://candybeauty.vn/upload/files/50092364824.pdfIn PDF document text
    • http://metalltechnik-kutschi.at/41730014701.pdfIn PDF document text
    • http://tensoinox.com/userfiles/files/15355216521.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/16060679414.pdfIn PDF document text
    • https://motiwalainstitutes.org/userfiles/file/nijozitebipugedojuzug.pdfIn PDF document text
    • http://collectifff.be/imgdb/accueil/files/56583587966.pdfIn PDF document text
    • http://isotech.si/uporabnik/file/zuriliwepijiris.pdfIn PDF document text
    • http://vidiniaibreketai.lt/userfiles/file/19402606383.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162030b92702---xinijonomamexakuvijukex.pdfIn PDF document text
    • https://cogi.sed-hut.pl///files//editor/file/74018749040.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd21528bc4---96162500558.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1615733eccae61---11699851340.pdfIn PDF document text
    • http://chayka-svg.ru/files/kikewebozitifoxijub.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_off0000bc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC23 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43A 10840 bytes
SHA-256: db2d0840f3d945d8458ed89ce7328b82b6dcad5480f551290965143397f1ed1b
font_02_sfnt_off0000ed22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED22 18248 bytes
SHA-256: c37cb3dc2e6160bbffc9b133e7c5846f6c9a3bd5808a8e013c2f2f05bec04d25