Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d8d3d2707ded50…

MALICIOUS

PDF

62.4 KB Created: 2021-09-03 02:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: cf022107c21e493324d36491dae51ec9 SHA-1: 2d565230b63351591386f11888a8bca2174bbb94 SHA-256: e0d8d3d2707ded506bd4fbf915c57b9b44b99613baae40b5bc32c4d261149d7d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised WordPress sites. The presence of numerous links and the use of 'utm_term' parameters suggest a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7090

Heuristics 5

  • 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
  • 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=michio+kaku+books+the+future+of+the+mind+pdf PDF link annotation
    • http://jarosi.hu/files/file/32227391448.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/aba1ed295915f659b594039c92d7c50f/pepixaleguje.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1612aae7284d89---lomizaxazugadedugi.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/kedomoserarifefeto.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/96c9a66ed3bb3393659d5e6581552ef8/82839083952.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087100442a56---57101159029.pdfIn PDF document text
    • http://restorationteleconference.com/clients/73716/File/94386728401.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/utdv6bnk2hhnqnmonqbmb6ivv0/21171485725.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/rawekajaxeboxikonepepeni.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a2402938003---66726945935.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/gbreirj8s80fe8lou2eio2ts73/kikuvapeninudu.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7337b6567---pigizekobefutedufupagena.pdfIn PDF document text
    • https://tourgardan.com/basefile/tourgardancom/files/sarezorojadadi.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/76990f6e8b798b6235ec02d1ba6a6c8c/26688041116.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/780404c29fac7168f65991951ac5f8f4/69073942213.pdfIn PDF document text
    • http://xn--80ab1a9a.xn--p1ai/sadm_files/72060554755.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16118f882268e2---27387175328.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.info/upload/files/44958879756.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/ferugutolumomilisuderozuj.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/pejexojuxerevazi.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8475638a1---xikifurevo.pdfIn PDF document text
    • http://novastal.pl/userfiles/file/betanamagikaliboto.pdfIn PDF document text
    • http://bjavc.com/filespath/files/20210831061014.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC526 11164 bytes
SHA-256: 3faad1708e451e216f02f410f8a6ef795a76e43066e11d6c65bc96c957c4b51c

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