Malicious PDF — malware analysis report

Static analysis result for SHA-256 2619df5faa86dfe5…

MALICIOUS

PDF

118.9 KB Created: 2021-06-26 00:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7a0ae835f344edd68738153b0407eb1e SHA-1: e399db8f83a54f58ff6124b75ec117d241a7fd02 SHA-256: 2619df5faa86dfe59685478eaae10df28a896612b358e6a5376a83963891c406
196 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and ML classifiers, indicating it's likely a phishing or trojan delivery mechanism. It functions as a link farm, directing users to various websites, some of which are hosted on compromised CMS uploads. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests it may be used to trick users into downloading a password-protected archive, likely containing a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9854

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c241474bd9---54068128842.pdf In PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/d4ok320lqnv3mjdvipds5rcu1s/61884440617.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9df499735---pafefirewovu.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/fg42dmu9slh841ujndtk9pmvv4/mawepugiwaluketafufuzudef.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/638a14e3cb938dcf91a519e4c0b46c63/25485924084.pdfIn PDF document text
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ruzevoberinojefubarariku.pdfIn PDF document text
    • https://alice-immo.com/userfiles/file/74684144505.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/44580103083.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/cnonsk4uo33vjct12faith8ov7/54828308839.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b986cd2f9cf---xawotuwifosatavapo.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acfae7ec8c1---18174217872.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d4bae923609---pegawasukemudibomapexeg.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716d58c3200---lezewamubolisuvud.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160959b11bbd47---78858180273.pdfIn PDF document text
    • https://bonafideonline.com.ar/wp-content/plugins/super-forms/uploads/php/files/451c25cb47a8c05745fe161f842b17ba/nixafulitojopamujaje.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16077646ef4235---bofepigaram.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/46791239894.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/kuxedap.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/liv2c34ib0nkatj675b4hbm0lr/vibobevojaridofakawijili.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/vafilolifadisiti.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071830b30b8f---xuguvugetibakorokifove.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/motes.pdfIn PDF document text
    • http://digifast.cz/userfiles/nomidusovojepeverexumiv.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a143128ec7---vosuw.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021051707551875.pdfIn PDF document text
    • http://adveotec.com/img/file/kubibipe.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/af5c5669d403497a3b0a674deb469d9a/44543478118.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=convert+pdf+to+xml+for+itrPDF link annotation
    • 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_off00016bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BB5 18528 bytes
SHA-256: 2c4189ae1f40af1bc8c90a360abb4496d4cafb8aeedf0058abc67523692add45
font_01_sfnt_off00019c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C77 10528 bytes
SHA-256: e80d7ebc7c973d6884251206f8e3aee166f59bc8a06983c0a43f15f7e04742f1
font_02_sfnt_off0001b46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B46E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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