Malicious PDF — malware analysis report

Static analysis result for SHA-256 9051de2b64914928…

MALICIOUS

PDF

100.2 KB Created: 2021-07-01 23:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ec0d6ed4815d72fa1faf1427f67f658a SHA-1: 738971d8ddb2eac65e73a449eda864385f41b633 SHA-256: 9051de2b649149288cb2e7386b16b38edbe3b9d61654760579afabdfaaedecac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The embedded URLs and the nature of the heuristics indicate an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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://allytemp.ru/uplcv?utm_term=fortnite+icon+series+all+skins PDF link annotation
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/437b7b62cb5ab781c27229e260ac67f7/najakegidokuditaxok.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d44c7eb8065---dudesapo.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a72f508f370---74497022048.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160989cc37e252---zogetokegebugoxutabomo.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2eecc13797---861190575.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a82c03e325---kuteduvabulomivanapawu.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8eecf6fb1b---zivunumuvatujavadopewup.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/luzinajuzotopuxutinovog.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/zijovug.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/671eab0c6c31829433f8c4e503949cff/muraganaripo.pdfIn PDF document text
    • http://recrute.fr/files/files/96860691757.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/61672824373.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/68757727273.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/20065f89c121412f3c05eae5d29c32fc/lubug.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/misiwamagozatibatabu.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/fc8211898ff3147786859dec48ac0818/pujederikova.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a636a27977---megegebezojolutop.pdfIn PDF document text
    • https://biothiennam.com/media/ftp/file/sikisase.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a296a387c5b---27160501703.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/69639368823.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160996934d736a---21085812290.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/797aski6fh18plue1el7fop4vv/winuduxowexeki.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA2 10292 bytes
SHA-256: 666b7efabf47599449fee6ce067d31057954be8cae31af25af7659111cd75554
font_01_sfnt_off000124e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CFA 18752 bytes
SHA-256: 294e05890eec02df48fd1dd1495bb8b8f4f68806d4ffd0b1914ded6cecae2502
font_03_sfnt_off00016de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DE3 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467

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