PDF malware analysis — malicious · f01a960fd5ea3e97

MALICIOUS

PDF

76.8 KB Created: 2021-07-05 11:09:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 3a2767933e4c88c57dca86237a5e5946 SHA-1: 4049f3625ebff6978dee8a09de604aaf1b7a0d4f SHA-256: f01a960fd5ea3e9731f6e3e7221ef1468937eb3a1c9681ed5ca1340fe05e2978

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to various external URLs, some hosted on compromised CMS platforms. These links are likely used to distribute phishing content or download further malicious payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.6968

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 https://laborke.ru/uplcv?utm_term=rise+and+fall+of+roman+empire+pdf PDF link annotation
- http://st03.it/userfiles/files/pewexuvapagi.pdfIn PDF document text
- http://nyett.hk/uploads/news/files/ronigoxutijo.pdfIn PDF document text
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874d7fc6c1a---vejizuzif.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/51607562f89abca3671c179b5278b7c3/rejazaj.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160949306d07a9---turisudutekivojubakulito.pdfIn PDF document text
- https://petrovsky14.ru/docs/files/pefaxurafizodaxuladokex.pdfIn PDF document text
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ee1fdde20138c27c5d0e3a5080fcc209/38120245660.pdfIn PDF document text
- http://kondicionery-dolgoprudny.ru/upload_picture/file/2049428293.pdfIn PDF document text
- https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/0et8irtm2qjcl88ma8tqvvhgmk/90354686185.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cfdedd3f403---ditesikaparo.pdfIn PDF document text
- https://agatanorek.com/files/file/vepebov.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/3694d9f8e644c68e4d8ad53e33f3de89/87768619821.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608824c456446---wowiniguziwa.pdfIn PDF document text
- https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/015d008ccd38608c03827cf066be549c/wuwududaziri.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e1a5353244---pimixeruzolubedab.pdfIn PDF document text
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6a64708e3---xikomemabufefabi.pdfIn PDF document text
- http://growlink.biz/userfiles/file/buxana.pdfIn PDF document text
- https://triptoboloyfoundation.org/editorsfiles/files/bumef.pdfIn PDF document text
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef86cdf200---41816095776.pdfIn PDF document text
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609beeca41cd5---nebobumarotem.pdfIn PDF document text
- https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/fb4dcfc85ee5db4bff6ddd431bb67d68/miwevosoj.pdfIn PDF document text
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/bcd640ea64fc10b230ac8c75b2d22fe8/jezasewawugosoxot.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ee42.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE42	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010659.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10659	10604 bytes
SHA-256: `0684b13d44a5cf69f2c93586e6d41977260d1c8f789eec39b54dd80bbc74f676`

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