Malicious PDF — malware analysis report

Static analysis result for SHA-256 30eeb99e1f0b51be…

MALICIOUS

PDF

87.4 KB Created: 2021-06-28 23:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 548356e81db3ad8e73cb075cea5cce59 SHA-1: 4b605927b04e66bb39c163b80f7fab51d6ab4e5a SHA-256: 30eeb99e1f0b51be6e5a01c801b7654b67427ae66be3fd0b1e0865a69163fee7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting. These links are likely intended to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://zabradli-znerezu.cz/userfiles/file/dobaruxexiregabun.pdf
    • https://charterboatdeliverance.com/uploads/files/suvitevidibow.pdf
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/82843774351.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d87d3b78c74---44305207250.pdf
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608775394892c---kamubekukugoxaratexozukim.pdf
    • http://crmloccitanecr.com/campannas/file/zukisozedo.pdf
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/d2a331c7e21c97c1e72e006099239c59/fanufubik.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ce4792bb097---muvebemubilup.pdf
    • https://arhometutor.com/userfiles/file/92627690462.pdf
    • http://jakebenmd.com/clients/0/0e/0eef9d569b11303d075d19626cc6f958/File/saxituw.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/e88d89745b370a2559b39bcc6aa75063/kavajefesuxamijatit.pdf
    • http://commune-bourre.com/userfiles/file/10267103350.pdf
    • https://alice-immo.com/userfiles/file/97055406013.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/6gkopaqh92c0c3t13ldg8hbam1/2404929134.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c13dd5d07fb---66465009713.pdf
    • https://bombapin.com/calisma2/files/uploads/ponamoridufi.pdf
    • http://em-mould.com/ckfinder/userfiles/files/97298159483.pdf
    • http://arcenevents.nl/site/upload/files/83750034303.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c0728c3f0c9---88020469201.pdf
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/9ac4a5554ba6a4fade120338a8074050/tukapalazuv.pdf
    • http://sbnjl.com/userfiles/files/22232349479.pdf
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/b6def05875a77677a20082a919f7dca9/gibuz.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=the+amazing+spiderman+2+game+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4da.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DA 16792 bytes
font_01_sfnt_off00010cf1.bin
2e17766e5bf40ec926c15e84c605af4ee1b70bf9579f81145b5d556708ba8c36
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF1 10836 bytes
font_02_sfnt_off0001258e.bin
9fcba60bad3c3cf1a1d29b7afa7d9d40fc9e46c86baaf056150fe849c2e7d83d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1258E 16564 bytes