Malicious PDF — malware analysis report

Static analysis result for SHA-256 196013c8c64939fb…

MALICIOUS

PDF

73.5 KB Created: 2021-09-19 02:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 5c80a289ef51ca214a5f59d411682ff4 SHA-1: 18e9de7b713c3909c0cade89d024e1834ee513d4 SHA-256: 196013c8c64939fbcc41cfebbcbe3fad673d9372ae3e29745081da7b200b1e28
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV, indicating it is a phishing or trojan PDF. Numerous heuristics indicate the PDF functions as a link farm, directing users to various compromised websites and disposable hosting domains. The embedded URLs and link farm structure strongly suggest an intent to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4113

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://coretry.ru/uplcv?utm_term=preset+urban+lightroom+android PDF link annotation
    • http://marchmontnews.com/imgs/file/64675548079.pdfIn PDF document text
    • http://goref.ru/files/file/xopuxiniv.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/73972b6f1222c383340c888e4963b43c/46481431542.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210918211942.pdfIn PDF document text
    • https://aecvfcom.nrgence.com/upload/userfiles/files/fujidijiludakufunatapa.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613c82b3d808c---67432374742.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161402d087e383---sosorigukadi.pdfIn PDF document text
    • http://radecznica.pl/userfiles/file/molarerowibebalufewalekif.pdfIn PDF document text
    • https://travellifeafrica.com/ci/userfiles/files/95240184479.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/47130539823.pdfIn PDF document text
    • http://ventensis.lt/public/ckfinder/userfiles/files/8406110444.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021091813054867.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/tazevegufumerukex.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/wumevof.pdfIn PDF document text
    • https://voyageaventurenepal.com/upload/files/19797586604.pdfIn PDF document text
    • http://chongqinghaohong.com/upload/files/wavevikudisatozutetijal.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343dc7026fc---9559443887.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1614036793d313---gobizevalagusesatep.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/fevomewodoxunifad.pdfIn PDF document text
    • http://vaynhe.com/upload/files/36476501055.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee5e7b9ae5---tolipawumawi.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/161402136103f0---wisudevudir.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3f38991cd---moxuketinexub.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/68796588997.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_off0000d31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31B 18620 bytes
SHA-256: bd5074270aead2cc6a0df24f56d672644a811eb499f4fbec16c785f2f00fc67f
font_01_sfnt_off0001039b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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