Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bdec14b13c383a…

MALICIOUS

PDF

78.3 KB Created: 2021-07-14 06:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0b983b68994cb45f3fd49782b3cf401a SHA-1: c8b668ca21c26473d2d642f5bffd0e3b410a178c SHA-256: b6bdec14b13c383a45a0edbcfdc3fad59536237e097f535a98a0052aefdf59de
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains a link farm with numerous external URLs, many hosted on compromised CMS platforms or disposable domains. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4425

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://ranaghatpchsschool.org/userfiles/file/6143918251.pdf In PDF document text
    • http://aftckwt.com/uploads/file/68701067840.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/jikemadumefoxakeviti.pdfIn PDF document text
    • http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/68286332150.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609039a164cca---36231234885.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16093b26a2f1ca---68315848073.pdfIn PDF document text
    • http://gchs1969.com/clients/867877/File/nugavibomuv.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/mojikutelobomapu.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/78684219721.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160845a113ae70---guzizije.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078305e4bdcd---nobinu.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/xedokufaluzijimanuna.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/c3e2705f24bfa8f2e7424a7c5dc7e562/52679098050.pdfIn PDF document text
    • https://dentalrud.com/userfiles/file/pudijidopabinoxib.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c9d5f40b245---nezetegajome.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d3a6db5022b9f6f6122891ce7ea4acab/gujimuxi.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/91290862505.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/d072nnasip8cbdc4t7f84epu13/dekomiperi.pdfIn PDF document text
    • http://dichvutheapec.com/upload/FCK/file/zepetipizekiruwigexiguri.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098da0c55e02---varulukuvobomeburijipu.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/61018997806.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d0a711c947c---80296453462.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/favojukerizebitezegikaxol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=50+60s+rock+and+rollPDF 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_off00010067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10067 10460 bytes
SHA-256: 3201b2570517697eb946785cbee1872fd77773eac18f8159c7e47c0ad61c6099
font_01_sfnt_off00011848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11848 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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