PDF malware analysis — malicious · bdea50b47fbb05c1

MALICIOUS

PDF

92.7 KB Created: 2021-08-07 12:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 9b9462c5d2be2806f6eff42e08db615a SHA-1: fa4cd758b9071e249c48b3e8336d8e27e849c356 SHA-256: bdea50b47fbb05c1ce544bf80fcab60ce4ffd63ef695b59c5e23f8d4b4d640fb

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF that contains a link farm pointing to numerous compromised websites, likely intended to trick users into downloading further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics, along with the ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION firings, strongly indicate malicious intent. The URLs extracted, such as 'https://queure.ru/uplcv?utm_term=dhl+tracking+number+format+india', suggest a phishing lure related to package tracking.

Machine Learning

Nyx PDF Classifier malicious score 0.8899

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://queure.ru/uplcv?utm_term=dhl+tracking+number+format+india PDF link annotation
- https://alsharqcc.com/userfiles/files/toxefelesi.pdfIn PDF document text
- https://multimetrics.com/ckfinder/userfiles/files/xoludifesipol.pdfIn PDF document text
- http://ropesadventure.com/d/files/jebilobifapifawefalusolu.pdfIn PDF document text
- http://norilskgu.ru/userfiles/file/16228039977.pdfIn PDF document text
- https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/bce4dc20fae5a69bff84000a9cffb488/95162650787.pdfIn PDF document text
- https://mauspro.net/upload/files/wurozuvexafiwowekumezep.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9be475bc5c---72721593129.pdfIn PDF document text
- http://studio5r.com/userfiles/files/79469669078.pdfIn PDF document text
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160961f7bd9699---4994653964.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/9eb7272204cb419742707fdbdfd64800/tuliku.pdfIn PDF document text
- http://esangsok.com/upfile/files/33059255220.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/56939881956.pdfIn PDF document text
- http://iphonedown.com/ckfinder/userfiles/files/nuzoduwijulij.pdfIn PDF document text
- https://ivanda-commerce.hr/userfiles/file/13043486490.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/ff67560b385fbd6c9b93db790b2426f7/34789190708.pdfIn PDF document text
- https://penzion-palice.cz/content/77401286487.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aaea616af6---sivezevinu.pdfIn PDF document text
- http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/xafebo.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/6f04bb32431b7ce64c62875181243be5/kufexevexapujexuzovubus.pdfIn PDF document text
- https://csodamalom.hu/files/files/tikigamuvama.pdfIn PDF document text
- https://www.babetravelling.com/ckfinder/userfiles2/files/filazamobamipisizubomu.pdfIn PDF document text
- http://tainghe.vn/userfiles/file/dodedajiroxemaxusufupudod.pdfIn PDF document text
- http://amajyuku.com/files/files/xazedomi.pdfIn PDF document text
- https://www.meditech.cz/ckfinder/userfiles/files/tonedu.pdfIn PDF document text
- 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_off00011aa4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AA4	16980 bytes
SHA-256: `9d2d7494d4f009a2dca3e4ec21a91e73bdc071e20157e005fe0b0be58eff19b2`
`font_01_sfnt_off000146dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x146DC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00015ef3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15EF3	11088 bytes
SHA-256: `13c85fc6d28256f5274a7b29b0238f3e29489fddf3baa3716af537f698975efa`

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