Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab49a252bc1770ca…

MALICIOUS

PDF

80.4 KB Created: 2021-07-18 03:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 17b879b982c84c6523d4ec1b359a9a97 SHA-1: fc328526a80231cc1ccda032906eeafdf6c2258d SHA-256: ab49a252bc1770cacec804b0b9f99794bbd303407d743bb6971640e0abd8924e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress installations and disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The document body is unreadable, but the heuristic firings clearly describe the link farm behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

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 http://massageindex.nl/images/uploads/85537533017.pdf In PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/fa975619037dfebceec18ada875c5d61/nagipereji.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/b0013a4d2c1f1180337f967ac7016bfb/fosuxokijoxatozerid.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/55360981328.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/5488b31a698592322a61ea6182681831/30479680144.pdfIn PDF document text
    • http://ototavandosemesi.com/resimler/file/zujapa.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c999d4a6d36df93cff28f53de9371eb7/fagatupefinupufubajinirop.pdfIn PDF document text
    • https://naoshima-habitant.com/69392248212.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c158078b3a6---pozufozovakudavevakufeki.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/kebfb704h852ij1ci6st2tn7kf/25551244233.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d99ed87e18e---putoxexexoludosanepogog.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/bf7518553d5c3e38f33f63e60b1d5e53/jidezawolinijeku.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c2450c391---wadewegugetiloka.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/sorulopezi.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/d115cd0bbadc3cf5a1131e9e80caf582/33000249512.pdfIn PDF document text
    • http://khautrangkhangviet.com/upload/img/files/99978835961.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c3fff5230c3---durusovupolisigul.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608e09cfeffad---35190998781.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/d6d4b04544b01065d6c3528d050c910a/lozujefimobanuse.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/c0268l658kvq5gf0ubl9lhl1hl/13651339478.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/76732357710.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=sound+of+music+favorite+thingsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000115a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A5 17236 bytes
SHA-256: 5168e0785b0ff84821d64ac19e356987e5ac1b395f919777afaee1cdeba19e82

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