Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9274c3591507bc1…

MALICIOUS

PDF

86.0 KB Created: 2021-09-06 09:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 1c61f3d5e58982bacc46349c397171cb SHA-1: c32ee4e58ee150b2fca2eed36c456353207384b2 SHA-256: f9274c3591507bc16baf48f32ad4bf012842d13670c44f4249f5d246b3a23ba8
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting domains, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4958

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://matras-devison.ru/upload/file/56651664660.pdf In PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/026996260ab1023e4b4b633fd874ede7/juzavovipatuvasumixaki.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/wajom.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16125825b97734---15442263471.pdfIn PDF document text
    • http://limitlessillusion.com/wp-content/plugins/super-forms/uploads/php/files/60eca1915495558dfbfdc9d0b315708d/sefukuwuwumitizij.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8008f061b---vizagevukuw.pdfIn PDF document text
    • https://francois-daulte.com/ckfinder/userfiles/files/zevuzuzilajimexuj.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/fuzoba.pdfIn PDF document text
    • http://yljx.cn/images/upload/File/47078880654.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/fonuzowujareruzivakofemi.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084daddb4bb3---rolowotumasojumiwatoki.pdfIn PDF document text
    • http://dakmet.pl/upload/30109257717.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/52943615289.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/9b64da1e3b4ee15090923d24ed5996ed/ripivugozidipogajutisoj.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/katafu.pdfIn PDF document text
    • http://apricomm.com/userData/board/file/gazot.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/42845075639.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/ee2f3a45ad7aa8ee93469d7b39ffafdf/wabaguxojasozexelepiwu.pdfIn PDF document text
    • https://domilot.com/uploader/files/15474629362.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/62671c88d1c777b2d2eaa02d63ded56e/larabodiwejizukosijuzex.pdfIn PDF document text
    • http://yngc.ru/admin/ckfinder/userfiles/files/lizesasulavuronop.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=definicion+de+importacion+segun+autores+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00011d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D64 11020 bytes
SHA-256: 0b3c58b1fc2a45a677b809ac635397cf3b303607289b66a9ad7052ba80644c9d
font_01_sfnt_off000136d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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