Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc68777c3e9ec20…

MALICIOUS

PDF

84.5 KB Created: 2021-09-06 15:35:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 240f1086d1fe676497f2a5c94115d8dc SHA-1: 7fabbce3fdee35da48056453b5c3ea470d1a9e74 SHA-256: fdc68777c3e9ec20ee0e774febb0ae1c783edc9532ceabcbadef41e3f3ab4cdd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous external URIs and link farm heuristics, suggesting it is designed to redirect users to external sites. The presence of multiple links pointing to compromised CMS upload storage and disposable hosting further indicates a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/uplcv?utm_term=dubai+duty+free+alcohol+prices+pdf PDF link annotation
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b353f402c17---vobiwagiputejeduk.pdfIn PDF document text
    • http://htygroup.com/upload/files/72249292859.pdfIn PDF document text
    • http://urgentcarepb.com/userfiles/file/98024597735.pdfIn PDF document text
    • https://melz-feu.ru/upload/77510479678.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ma6enosc01o4h7hpftqqso0rv2/70908986841.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/dekezesi.pdfIn PDF document text
    • http://thecreditcrisis.net/clients/73966/File/kemil.pdfIn PDF document text
    • https://mallncart.com/userfiles/files/5210250014.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/50920855550.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/74128203274.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/37010963519.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b718ad945fa---89573456844.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/fodatewo.pdfIn PDF document text
    • http://feuerwehr-mittenwalde.de/mediathek/files/65359887909.pdfIn PDF document text
    • https://areicon.com/images/file/surujuxunisowukuwasakar.pdfIn PDF document text
    • http://wasserburg.pl/userfiles/file/69847919937.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/t62fdi8lvrli1dc5bunv8tnql5/pelemudobewo.pdfIn PDF document text
    • https://austarpharma.com/upload/files/zogunedaferep.pdfIn PDF document text
    • http://museeducuir.org/upload/files/jefawawasupeniruvijogoba.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/939e8314d5e0a797a08fa2a9e764689a/42134911969.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/30ca5845b6d6c23ae77b91b851b45f46/55815378622.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/62951593221.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/24756865827.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a32ca4e98ae---nirozixozosovofovuxoloj.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/61363844997.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_off0000e5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDD 17424 bytes
SHA-256: 29f5466e6dadb344ac3aba077e96b1e2394ef630af4b28ebc65e7ebe32fc45d8
font_02_sfnt_off00012b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B0D 10968 bytes
SHA-256: 798394cbc4358aadc612ff17bccd3874f849c08b0b39438d0dde563ca28ddeab

Open this report in the interactive analyzer, or submit your own file for analysis.