Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeff817b09e6cb96…

MALICIOUS

PDF

63.7 KB Created: 2021-09-17 01:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 11eeafb32090ddd6373e6da7dcc700af SHA-1: 22c9d51a7a103a3dd9c8970b7f640f8008853c4d SHA-256: eeff817b09e6cb96f25a82ed6756c3e61942915f25598b651966fcf51775643b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that function as a link farm, directing users to various external websites. Several heuristics indicate that these links are hosted on compromised CMS uploads or disposable hosting, suggesting a malicious intent to distribute phishing content or malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5661

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://tndgdemo2.com/ckfinder/userfiles/files/vowapazavazavipaz.pdf In PDF document text
    • http://haphadoor.com/upload/files/86810657231.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16133f1e1b7bfb---89738770496.pdfIn PDF document text
    • http://sabaispa.net/userfiles/file/ginufusatufopumuteju.pdfIn PDF document text
    • http://yh-nutri.com/filespath/files/20210906223007.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/37568703693.pdfIn PDF document text
    • http://udelimpa.es/ckfinder/userfiles/files/saroxemakix.pdfIn PDF document text
    • http://hnspkjx.com/d/files/549425319.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161307f2ec15b7---97447521283.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/77313789849.pdfIn PDF document text
    • https://alebusph.centralcms.cloud/galeria/files/lurifonudalasezobenoba.pdfIn PDF document text
    • http://paradoxine.com/upload/files/fikujarujikudab.pdfIn PDF document text
    • http://medwin.kr/userData/board/file/80379732860.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/xabujesubuxuw.pdfIn PDF document text
    • http://imi.vc/upload/files/4824784630.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/kadaxixegetinemogefiwet.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/20290845379.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.com/upload/files/8848000720.pdfIn PDF document text
    • http://konferencii.org/web/uploads/assets/file/pepelavagotozuxuburixuder.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161422b3280da1---32515774429.pdfIn PDF document text
    • http://fcvperu.org/data/fcvperu/userfiles/file/25755211503.pdfIn PDF document text
    • http://irfanmakina.com/depo/sayfaresim/file/xupelidapokazetegebexege.pdfIn PDF document text
    • http://tfh-filter.hu/_user/file/komirodozelijosikaxod.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-9-12/20210912055453545841.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+get+gps+joystick+to+work+on+pokemon+goPDF 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_off0000c6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE2 10924 bytes
SHA-256: 1f39575aefe4d01cde42906a08ae3c85f39381b8a62ca3694f0ab0e9e7bfff61

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