Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc30085197ff4b2b…

MALICIOUS

PDF

79.0 KB Created: 2021-09-11 05:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d93a11ecde7d3c1b1d8e3b400d5bc6ef SHA-1: 884b79572752f56320d17dc23201e60b83ee028c SHA-256: dc30085197ff4b2b3072c1d23e119e735bca9125645e34011a979e13a7ff6777
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are structured to appear as links to other PDF files. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute further malicious content. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7222

Heuristics 3

  • 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://xn--o39a91gvwm83kbsn.com/FileData/ckfinder/files/20210908_8557DE30B327CF07.pdf In PDF document text
    • https://egyiksem.hu/uploads/file/39199229661.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/61560268123.pdfIn PDF document text
    • http://ruihuitax.com/files/file/93112852655.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210906225656.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/12558640426.pdfIn PDF document text
    • http://aotwresort.org/ckfinder/userfiles/files/lonixokefixapufukajid.pdfIn PDF document text
    • https://www.speeddating.lt/speeddating/ckfinder/userfiles/files/37692534563.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/kajapamemikeb.pdfIn PDF document text
    • http://onelove.cz/file/wudesanabuvifavejir.pdfIn PDF document text
    • http://101eyewear.com/luutru/files/favosodemukubewowemes.pdfIn PDF document text
    • http://badaranquehablar.com/userfiles/files/72154980220.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/batetuzesibawesudapolu.pdfIn PDF document text
    • https://total-sport.pl/img/upload/files/dakugirewenag.pdfIn PDF document text
    • http://tongrentangthai.com/UserFiles/file/68957710231.pdfIn PDF document text
    • https://coffeetuanvang.com/Images_upload/files/gakaxodenotomek.pdfIn PDF document text
    • http://seattledesis.com/fckeditor/file/jojopumazak.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c12b88e48e---kuvufilomojerefota.pdfIn PDF document text
    • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bomazejode.pdfIn PDF document text
    • https://gs-hemeringen.de/ablage/userfiles/files/26357638686.pdfIn PDF document text
    • http://ozcetinler.com/userfiles/file/tamajupapipimeduxaxuzozeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=putlocker+123+moviePDF link annotation
    • 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_off0000fc5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5E 20492 bytes
SHA-256: eaf704f020c9f6652e4e462b9ca9c87aa803fc488da5ec0ff2ac64b318866230