PDF malware analysis — malicious · 9ac30cc2c486e697

MALICIOUS

PDF

80.4 KB Created: 2021-09-07 00:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: c328ee630fa1e6d80e8112fc474f9236 SHA-1: 16dedcdb66ba5598e74fe3b922fd2f82e146a870 SHA-256: 9ac30cc2c486e697bcd03058bb907c76d9d6510dec7f924a66c724b06232af8c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm used for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it is designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.6964

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://geopraxis.it/userfiles/files/pivelirolagimibolo.pdf In PDF document text
- http://mobiliteit.nu/files/kavasulirimakilurano.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ef7ba32b4---ninaxikonixilopok.pdfIn PDF document text
- http://china-hold.com/UploadFile/file/20210528103754886.pdfIn PDF document text
- http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16077de5ba7679---vegefatefujosim.pdfIn PDF document text
- http://rubfila.in/files/file/50963625539.pdfIn PDF document text
- https://medosojewellery.com/userfiles/files/81926378366.pdfIn PDF document text
- http://aep-tc.com/cache/fck_files/file/60376883645.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cd5cb47ed---66242079661.pdfIn PDF document text
- http://fisioterapiasuzzara.it/userfiles/files/rajoginidopike.pdfIn PDF document text
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/c4fedeca83a99469b61a312e79f8320e/32499547104.pdfIn PDF document text
- http://mega-treid.com/userfiles/files/pevinupa.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/80441167468254b205a3e8c30ae465f5/54080613341.pdfIn PDF document text
- https://usis-consulting.us/uploads/files/lolaxedowawozop.pdfIn PDF document text
- http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/58729c6cb0f16b3fc7a57bd3b8190616/lagofotazifuwunazopunab.pdfIn PDF document text
- https://alice-immo.com/userfiles/file/23751006509.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612382a2a6285---84731670555.pdfIn PDF document text
- http://elskenecologie.nl/files/xewarivedekurifosidoravas.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b702fcabd4---nemuzedanoni.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2404a39aba---pilipodonid.pdfIn PDF document text
- http://suankaew.net/upload/userfile/files/zoxunemufakaboxunevefi.pdfIn PDF document text
- http://kalmi.ru/upfiles/files/komaxitixip.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca3ec3b37e---63205119525.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=vocabulary+worksheet+my+familyPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e76b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE76B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ff7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF7D	16912 bytes
SHA-256: `ac7dcc8b240741e78de8a0567e63dbf67da49c0f9f0d3b8b9f3b129fd34cc2f6`
`font_02_sfnt_off00012b18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B18	11000 bytes
SHA-256: `7e4c92b01b2dbc9a1eb2cc8d6fbad2fccbb892b9f4f7c02fac121b2a91d9590e`

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