Malicious PDF — malware analysis report

Static analysis result for SHA-256 9609b27646e2a35e…

MALICIOUS

PDF

84.2 KB Created: 2021-08-23 16:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a5ee4da4c17b1d2804f9f4e3f72eb1df SHA-1: 9c17fb0f5c1d15b51647985c9c3f2b88e50dd602 SHA-256: 9609b27646e2a35e031e591580e0af96169e76668915b3732a4e58914c3206a0
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised websites or are part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution through these links. The file's structure and URL patterns suggest it's designed to lure users to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://simmsfamilyreunion.com/clients/9/98/98d47f1658d09d39d77ba56043454c9c/File/22808489121.pdf In PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/29105433050.pdfIn PDF document text
    • http://deauville.ru/files/file/jiwarolesuwesiziveba.pdfIn PDF document text
    • https://cometsecurity.in/admin/userfiles/file/3714502986.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/wesonefimelipojimozosax.pdfIn PDF document text
    • http://dansensvenner.dk/imagesfile///bomaxosexeluw.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b0b4bb327---wufapabexopi.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b224fc66c7a---82845878195.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103b9863664f---78771907893.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/30568033226.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927bacd8813---pinivikugepenogenevuk.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/75222162901.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cce5c7f1c9---gexikijuronefiwarem.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/b3f67f103ddff42f68be91217269cc3b/zewisesatebefa.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/96623763310.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/zusopodusozodi.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/086358cb7319b5b2b7b6d4d6d7a9437d/90705128776.pdfIn PDF document text
    • https://solo-enoant.com/content/files/files/nogesivigipo.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be6de63b6ea---wikunalitevelu.pdfIn PDF document text
    • https://dvg.asia/ckfinder/uploadfiles/files/samifak.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c65187adc12---sadelubogolir.pdfIn PDF document text
    • http://xn--b1afklwjc5g.xn--p1ai/ckfinder/userfiles/files/99615421284.pdfIn PDF document text
    • http://vanharteyoga.nl/uploads/files/98963615335.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=cover+fire+androidPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 17456 bytes
SHA-256: 8c0382c6ce9bf41e8ef385c92200711df205beed9fc004ab2639564a729c8bd5
font_01_sfnt_off00011420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11420 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C37 10132 bytes
SHA-256: b7c362e57d5b2f529331cadf1b3d482698b1831c8c99cce16d72db728f51343f

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