Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40233600fd8ce70…

MALICIOUS

PDF

95.1 KB Created: 2021-07-02 19:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e5f3f9865afe1b04122ccd00cb32fc0c SHA-1: 03d5120abc738e154056f635266fbaae09b7a284 SHA-256: d40233600fd8ce7083dbf1641ae217ba228df590091a6c2be69a1a46881ec6e7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://hbfilm.ca/resimler/files/ketepiderelajuri.pdf In PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/8o8th24i01c3hcsih4jvqtoo83/bagunebunubozimututexu.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f680c7be68---41244260924.pdfIn PDF document text
    • http://op-gold.com/ck_image//files/wilodas.pdfIn PDF document text
    • http://sdtrafficticketlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33271475840.pdfIn PDF document text
    • https://koffiewarenhuis.nl/app/webroot/files/userfiles/files/nukovurisoj.pdfIn PDF document text
    • https://ski-valloire.com/ckfinder/userfiles/files/95926056475.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c907202fbf9---51053973501.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/39678953806.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/nobugojuraxagizaxebukema.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609456d1e77e7---totuxexijadulezasivo.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/n6tp1d5ml876tbmms1h1afhoj8/92825881470.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/dokel.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884080d2639---7326826769.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a49bc760eb---xutudimajamotale.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29e88013bf---buvalomabevoxujapod.pdfIn PDF document text
    • https://ecoretras.com/file/fitetolarunitos.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/5dffa354b899dfd2191af895a8550df1/kaxajimugexipija.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/b0ccd3aadb328fa53afd80ec8d1ca4a5/69523071746.pdfIn PDF document text
    • http://thamdinhgiadaiquang.com/img/files/balalawesilaxilumo.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/27204013803.pdfIn PDF document text
    • https://ecoretras.com/file/4015705930.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a21628b0a---gomuturofolajasoliripa.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/45046585366.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/fetati.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=petechiae+caused+by+itchingPDF 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_off00010f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F07 18108 bytes
SHA-256: dc78e5ae36de32c3f62cf8a85578d6e09b30dd8765332179e55273cc92056450
font_01_sfnt_off00013ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000156dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156DC 10740 bytes
SHA-256: b888d712d5305b966839eef835a5aef282a722f04868c59d0fe87dd2b77a5ce8