Malicious PDF — malware analysis report

Static analysis result for SHA-256 702e6a15f489a599…

MALICIOUS

PDF

92.5 KB Created: 2021-07-31 16:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1b8d2f36689489086a62ad8c82c9613b SHA-1: 654143eb96478b9fbc97933a6df401dda186c6b7 SHA-256: 702e6a15f489a599965f92cce354e8fab6dba5b067572a04a19dc1062e1c5ec2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on multiple compromised websites, suggesting an attempt to lure users into downloading malicious files. The ML classifier strongly indicated maliciousness, and the presence of numerous links to potentially compromised CMS upload directories supports this. No scripts were extracted, but the overall structure points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 5

  • 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://movementlab.dk/userfiles/file/95799972542.pdf
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4911618de---kurijigabexakawukoxixiza.pdf
    • http://donaldbermanmaimonidesgolf2021.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/moxedurokewagoneweba.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e281d629d---gasizenoxogiv.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e230b1df8---50617495859.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a926d43a127---93180674972.pdf
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c45fbe64d3e---18313184067.pdf
    • https://onwater.my/uploads/file/xevabunubu.pdf
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608706bcb4e4a---fupebaxudowapisapob.pdf
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/ad6eaaeb19fc0c1c715aefb269875c47/34552870080.pdf
    • https://anakaygame.com/calisma2/files/uploads/68612028761.pdf
    • http://lactopad.com/uploads/files/kudogobuxa.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/bo2baqcp4s8fijsr402h1ftbe2/wufosesiwon.pdf
    • http://briquettemachinery.com/d/files/22233148652.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/b9ce7b414a851a69daae39b32547b746/pobiworovurawibuzuv.pdf
    • http://chnli.tw/CKEdit/upload/files/goraw.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/ff9cf1b0cdbfc18d5931dc856112c20b/95075188566.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088169bd8042---kiwaze.pdf
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082204301c3a---vifevub.pdf
    • https://www.tunnel.de/files/uploaded/file/buseramaridoxokifakomutit.pdf
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/2768673d77030b40ddbe2e05f3e68571/14266427240.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071ce878336c---xowupepododuxogalegina.pdf
    • https://vieclamxaydung24h.com/upload/files/mizuferalutolomoru.pdf
    • https://tvsporedi.si/vsebina/ganuvanomimivenudafot.pdf
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a4a6d6fec---vevufokopom.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160799f7f1fcb4---67680307633.pdf
    • http://coinproject.com/userfiles/image/file/zuwubonezukogibowopimi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=google+drive+the+lion+king+full+movie+hindi
    • 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_off0001027c.bin
e7588f0b2ce04659616cd6ce4a79cfd6e2eb6243ce17a706943b5e7eebc885f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1027C 17796 bytes
font_01_sfnt_off000130d5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130D5 16792 bytes
font_02_sfnt_off000148ec.bin
c35211d14f9ebcab9df16d7d056cf06d815c5a868c0cf7b5803dcf027f3d16c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148EC 10768 bytes

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