Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b26084c37407e4…

MALICIOUS

PDF

79.7 KB Created: 2021-07-21 12:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 30aad068b8a25a5e16c92f2bd9fa4891 SHA-1: 0956541763b513e7737c853ec64bcc0fa1b85363 SHA-256: 05b26084c37407e4c998d1b94cb88adde981bee43134dc12b4bc8792261380c2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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://x-site.by/upload/editor/files/35144169184.pdf In PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf70d22e80---33693757290.pdfIn PDF document text
    • http://szentdorottyapatika.hu/files/jenanezago.pdfIn PDF document text
    • https://penzionradvanice.cz/res/file/tolotufujofiv.pdfIn PDF document text
    • https://beldaoyun.com/calisma2/files/uploads/11672296553.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160e2f4c83f3d6---dogiwobavidote.pdfIn PDF document text
    • https://coebmsf.com/userfiles/file/73484749863.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078756f8c8de---47764796017.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/60b8e15962e82e774c05f1ddf66515e6/82279185631.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/od166tltful7vaultrjbh4p8tl/99979263880.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/f2caba54fbc683d427b38fc1133238c8/dulivefuzi.pdfIn PDF document text
    • https://csodamalom.hu/files/files/zukeger.pdfIn PDF document text
    • http://turinhotelcompany.com/userfiles/files/fuwivalabevef.pdfIn PDF document text
    • http://vicorsupply.com/uploads/images//files/50121293537.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/katogoganebazabepo.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/60042075100.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/92084958381.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/kmt1oo81j088v0sbg4euel37v6/ruzukegopusiditetel.pdfIn PDF document text
    • http://laros.cz/UserFiles/file/91019136210.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b20c1343fd---55019209571.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16078f1d4c2a03---1283160478.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/94760130254.pdfIn PDF document text
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/63579414404.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/96652156080.pdfIn PDF document text
    • http://championsview.net/userimages/84623883299.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=pokemon+go+free+spoofer+androidPDF 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_off0000e9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F2 16788 bytes
SHA-256: f3d83b77570b223921ac490d17ac68bc4886c12b6819b032fe73d501f4e7a9aa
font_01_sfnt_off00011554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11554 10792 bytes
SHA-256: bf85703775ca2e7aad9d6a07045350394158b3a6dc443b984663a24c31139185

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