Malicious PDF — malware analysis report

Static analysis result for SHA-256 126f426ff958b67d…

MALICIOUS

PDF

79.6 KB Created: 2021-09-12 16:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: e68139d6c9626788678a9bb0586ea63c SHA-1: 666c96e517b85cc9312f4e0173e187c7b2aa5622 SHA-256: 126f426ff958b67d64e237e3a1a75cf86020874b7aaaab3e56d338ecf2c4539e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3499

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://headlinesdinerla.com/uploads/files/wuwitifixaramufavex.pdf In PDF document text
    • http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/68819243052.pdfIn PDF document text
    • https://full-flavors.com/img/Data/file/21498717524.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/359f4bbd10511bfe04252c4f6f2ff127/jujozonawal.pdfIn PDF document text
    • http://mariamozharova.ru/uploads/files/voselirabizajezegitov.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613694814cb52---gepunuris.pdfIn PDF document text
    • http://tischtennis-kiel.de/images/file/nojodumodoluwugupa.pdfIn PDF document text
    • https://jotelek.hu/files/file/7433343201.pdfIn PDF document text
    • http://ryyw.com/upload/files/2021/09/202109011852106975.pdfIn PDF document text
    • http://a2hgghk.handylover.com/upload/files/sifikitegesigu.pdfIn PDF document text
    • http://mdtrend.hu/files/file/vunusagudamasuzamita.pdfIn PDF document text
    • https://doublehaircenter.com/upload/ckfinder/files/kevuzarifanitekabogefevor.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/161345f573d7f8---92247412913.pdfIn PDF document text
    • https://bvphcn.bdata.vn/upload/files/77618415678.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a8aaaa5a96---mojisulolojeful.pdfIn PDF document text
    • http://abwingssuffolk1.com/uploads/files/gijusivilulilabowaru.pdfIn PDF document text
    • https://tl-systems.hu/files/files/jilemum.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135035ed7c6e---67423322892.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/vevufefewusuluwajole.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/e9f6c71d51cc4bce2e8eb5b4f608ce67/boxugugometizafolok.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/33449097034.pdfIn PDF document text
    • http://eventechsite.com/files/files/32982416238.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/dasezufitobatafapegari.pdfIn PDF document text
    • http://westpakusa.com/phpsites/vertical_living/uploads/file/zomodipafefepeke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=office+3650+loginPDF 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_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ffeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEB 10604 bytes
SHA-256: 41e74142ca200fa6d2e3fb9054cbc8dc042aef3dcbcf549e9928a81e56c9dbc3

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