PDF malware analysis — malicious · 98eb83081ed2552f

MALICIOUS

PDF

70.3 KB Created: 2021-09-05 05:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04

MD5: 80a1c3282989c730032c4a8161fa1bbc SHA-1: 211162605662bb4ca5de452e1d6761d6eeba8d77 SHA-256: 98eb83081ed2552fd1927d43c7d6398bb81e9151793c775dff4a02ed9c53bd09

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier suspicious score 0.3555

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160800bf86ed74---sipetomanuw.pdf In PDF document text
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607302e558d2f---raderimivokeg.pdfIn PDF document text
- https://ksboutlet.com/file/files/xeferudaneravusuwodokazog.pdfIn PDF document text
- http://architettotoma.it/userfiles/files/32486232916.pdfIn PDF document text
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/h9hin6a6gpoigfrfocpgb07uui/43458347995.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16133fc85a4e8e---42237470799.pdfIn PDF document text
- http://lasermedia.cn/userfiles/file/bubelim.pdfIn PDF document text
- http://goteneplast.se/files/images/file/waketomexiduj.pdfIn PDF document text
- http://tfforming.ru/d/files/10948978410.pdfIn PDF document text
- http://zxsolar.com/d/files/34811066248.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/28bccb1ea340673b412b88920393f046/76091632915.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091bd7bca895---25212662817.pdfIn PDF document text
- https://itacademyindia.com/ckfinder/userfiles/files/59213156427.pdfIn PDF document text
- http://geteffective.biz/uploadfiles/file/sevikokategezamodeniboti.pdfIn PDF document text
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/43b2b83feb7c4477103d0c35ff667058/watug.pdfIn PDF document text
- http://colorfusion.us/admin/images/file/mizakipifiwoginanugilaka.pdfIn PDF document text
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cab1390887b---voduvixiruleles.pdfIn PDF document text
- http://togul.org/sites/default/files/file/gawifolelivelut.pdfIn PDF document text
- https://remini.hu/userfiles/file/kezovukovabum.pdfIn PDF document text
- https://medtek.vn/storage/file/40473998142.pdfIn PDF document text
- http://bantinnhadat.com/users/files/fugekoguponufedisur.pdfIn PDF document text
- https://bodegoncriollo.com/userfiles/file/samugibijulewoxaxibu.pdfIn PDF document text
- http://cngwalk.com/fckeditor/userfiles/image/83598361035.pdfIn PDF document text
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096089486b06---84071176054.pdfIn PDF document text
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/95de28d21d2f7a9bbbfd7b1d19419710/58229599001.pdfIn PDF document text
- http://birons.net/wp-content/plugins/super-forms/uploads/php/files/3c7d187256a3120f84ccbb6e7b0d457b/gotojibobusef.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=mysore+palace+history+in+english+pdfPDF link annotation
- 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_off0000c55f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC55F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000dd76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD76	11004 bytes
SHA-256: `b1fbb78a0c22cbf885140814b09cd54b5627f96b90676282c5bad92dadde3287`

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