Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca0bf3808104be3…

MALICIOUS

PDF

90.4 KB Created: 2021-06-15 11:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 096057eff41d3e23b173406b04e0bc72 SHA-1: 48297806ae65004ba21a8c4707bdece4232904a7 SHA-256: 5ca0bf3808104be31285f4944f561441d45d35363e3ea0cf6afdd7b88e4dc41b
162 Risk Score

Malware Insights

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

The PDF document contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. The presence of a 'download button' heuristic further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9371

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://drafthe.ru/uplcv?utm_term=vishnu+sahasranamam+in+gujarati+pdf PDF link annotation
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/56bc1a3b313d52a737c83323570025e5/komekaranavip.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf610762f6---45482357475.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/6d2b9cbb6de28c4046dd617487c3c827/lomimeridozekamidodewa.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/32126580930.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/xabetururu.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/titumipitepopudugataki.pdfIn PDF document text
    • http://ridendo.cz/files/file/xawupejodeveki.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d39e3637d---28102480818.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/wogugosugabolonixuruvi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/6fbf57a9a6970bc595fbd8e7d3aab3e9/63210659569.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/boxedawutaligaxak.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/dpgpk82ibphahbpv18nlvlc0kj/xebekowupasobawes.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/80a1d2f2923795cd377621f6a7df983e/46261339744.pdfIn PDF document text
    • http://poorclarescork.ie/images/vixopogidusanovugijezu.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/g9g5i232i4ftgrvlot87qss7v2/mugovobuxesojugedagakirek.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/59a551975dc5e4295640f4824f58aebf/noravezusemuxekok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B94 5464 bytes
SHA-256: 9294b76695323121774e2c4d5932f52806a436f173843079b993095356fffe4d
font_01_sfnt_off00013e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E0C 11876 bytes
SHA-256: 151e9240c240ca88583a5ba71a93a22ad30a863dcc156191f7408a261f6770ba

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