Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44eec0b97236749…

MALICIOUS

PDF

58.8 KB Created: 2021-09-28 07:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: bdf034e854e13c753c5374859cdd3ef1 SHA-1: debb2ff98c0ee05e02c44f5a2309f105a0a153f2 SHA-256: e44eec0b972367498c41d9b160fa6d1611538a88d57fe2a9d4859a6e6298346a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting. These URLs are presented as a link farm, likely intended to trick users into downloading further malicious content. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7262

Heuristics 4

  • 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://catamma.ru/uplcv?utm_term=black+panther+full+movie+tamil PDF link annotation
    • http://divapharma.com/uploaded/file/juxatarute.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ae30a737ce---90342794501.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/29524496005.pdfIn PDF document text
    • http://perfect-gallery.com/userfiles/file/92854783548.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613d121244c7a---67269766349.pdfIn PDF document text
    • http://www.rajpuc.pl/pics/file/8899330584.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/pafozogagumevi.pdfIn PDF document text
    • https://www.anoregmt.org.br/ckeditor/ckfinder/userfiles/files/82491444002.pdfIn PDF document text
    • https://abriganature.centralcms.cloud/galeria/files/79404927556.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1615123d595a8d---newukatududaw.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/pezir.pdfIn PDF document text
    • https://h16hr15k-h19hr37urn.com/contents/files/rizupitadafijikegag.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/gapowedobubu.pdfIn PDF document text
    • http://hkalc.com/userfiles/58051980668.pdfIn PDF document text
    • http://rosniyom.com/userfiles/files/40954600517.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/1201069649.pdfIn PDF document text
    • http://tensoinox.com/userfiles/files/kugaworofib.pdfIn PDF document text
    • http://harasim.cz/uploaded/files/wutotiduxubejubirufudofo.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/70479072001.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615233c33efc2---74528189771.pdfIn PDF document text
    • http://3mfa.com/images/editor/files/87250624314.pdfIn PDF document text
    • https://waxparadise.pl/userfiles/file/jilokudar.pdfIn PDF document text
    • http://buyo-g.net/userfiles/file/gigufafupepolunagupu.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/38554821482.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_off0000b749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB749 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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