PDF malware analysis — malicious · 0b14718822242696

MALICIOUS

PDF

102.7 KB Created: 2021-09-07 14:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: f7bea2724d3201428b54ca6458cc93f6 SHA-1: 35ccc3edb1e4441d9e402ad7e6cb2c70862148c9 SHA-256: 0b147188222426966343c8eaa3bdbd83beccb90d60c3138537dda9df1464b436

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. It contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The PDF structure and embedded links indicate an attempt to exploit users through deceptive content, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier clean score 0.2108

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://rideabikenews.com/user_img/files/95867071138.pdf In PDF document text
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/u071cj6csicng5mpkm3mf0nlki/72297124300.pdfIn PDF document text
- https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/25f83754e22bb5302d9853657f79c510/dalatudivojosesusi.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/4e4qr3k6al9bjd8innmuu0fq26/587608944.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0febbc3db3---dududolisomebetaridot.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c6fb06a0c---kubolixowebasafovili.pdfIn PDF document text
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/89ed3ac1f97e3fe0033a574b013c0be2/84170533154.pdfIn PDF document text
- http://camel-republic.com/media/userfiles/files/11885247808.pdfIn PDF document text
- http://sushikyototogo.com/uploads/files/kirudor.pdfIn PDF document text
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f5e970c8ab---14505094630.pdfIn PDF document text
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/313418011acf0741137af7b9b75ec236/66219762419.pdfIn PDF document text
- http://spakimthi.com/upload/files/kimoluturexog.pdfIn PDF document text
- https://altonika.pro/files/fck/file/mupevodurawena.pdfIn PDF document text
- http://cnex.cc/images/blog//file/58320968007.pdfIn PDF document text
- http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0a103d512---47842109209.pdfIn PDF document text
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5386e6e39---69058591839.pdfIn PDF document text
- http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.com/ckfinder/userfiles/files/90682247840.pdfIn PDF document text
- http://misr-consult.com/userfiles/file/38993589378.pdfIn PDF document text
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b612b2e59a6---25024254575.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/ecc2ef4f2a4a5420e43e30f4a77eaec1/82925001076.pdfIn PDF document text
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/6b3ffac4a2a52ffc9aad08bcf5c6e2fc/gibibukojogefeg.pdfIn PDF document text
- http://solyaris.pro/admin/ckfinder/userfiles/files/kuxosadobawe.pdfIn PDF document text
- http://zhongjiukeji.com/upload_fck/file/2021-8-28/20210828150639177107.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=derecho+procesal+civil+rojina+villegas+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_off00013c5f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13C5F	10996 bytes
SHA-256: `dccff4775cd9354c85f12bd5ffcd91bf098003bf10bcb2e0a82006254330fcec`
`font_01_sfnt_off00015595.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15595	20072 bytes
SHA-256: `3864e567a2a15a5a192020e949335f938580dca5b72e13e5218880e86f465f75`

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