Malicious PDF — malware analysis report

Static analysis result for SHA-256 6069bde68be59c37…

MALICIOUS

PDF

80.4 KB Created: 2021-07-10 06:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 51136e8927a89264494e3838a2577864 SHA-1: 081d014cd0f1321368e67f44366c7a4bb3480b90 SHA-256: 6069bde68be59c37bacbe8496c1cef2265b0fa727414f94d5f1427617e1e1059
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings suggest the PDF is designed to exploit vulnerabilities or trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4210

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 https://smidgel.ru/uplcv?utm_term=who+invented+automobile PDF link annotation
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d38f93cfd2---teginuwupepusizupome.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/47678864023.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607949c282f40---13529950648.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/xifurazewagesepokaliseb.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baa67ae98c8---kajikoza.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/31be5a50e52aed7dd1fc820986f1ea75/2647265504.pdfIn PDF document text
    • http://ibshop.gr/uploads/_uploads/files/85399246855.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/lebiwezavazijemegij.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/e14ddf14bc217741688f42c42392c9f1/bavevebotojatawodu.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/96148458577.pdfIn PDF document text
    • https://vieclamxaydung24h.com/upload/files/dadulupexevuvimofagelis.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a46d44b07---90435495292.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853435be179---98139184744.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/d75a751925390646e57ae9cbb13ed7cc/ledaririnudux.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/ht80510c5ri5pj42gg25sguf15/19887830058.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b434cd3f056---paxesosa.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608df8fb77927---37051342171.pdfIn PDF document text
    • https://mimpishio2.net/contents//files/40536473622.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fb4f929a2---pudanapevifivuferigexav.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8277cf3ba8---gewegikanamagodi.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/mr16eopfvfbf6k99b1rab6t3u7/61770774346.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc970909b1---rijusopejojelatiwab.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d64e2429ec---bitabezimolomumet.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/8c5bfa12c11840426a2267fa09541f2a/67213266333.pdfIn PDF document text
    • 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_off00010319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10319 10544 bytes
SHA-256: 6a24cc50a67d5b4f8da9a51ef2613a24d176bb4ee51c8cccd927b1da474b21bd
font_01_sfnt_off00011ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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