PDF malware analysis — malicious · 85d262c39e66856f

MALICIOUS

PDF

70.3 KB Created: 2021-07-25 22:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 1bf643aa430ffced41756b308581a323 SHA-1: 142bcb3a42fe8759460baf9623579bc799a00c59 SHA-256: 85d262c39e66856fa75a0151f2a99086058135fe63e4d64ab7b61db3e1dcaa7a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous links pointing to compromised websites, indicating a link farm or phishing lure. The PDF's structure and embedded content suggest it is intended to redirect users to potentially harmful external resources.

Machine Learning

Nyx PDF Classifier malicious score 0.8710

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 https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c567de4bfc4---xuwegakeg.pdf In PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a00d94a5b1---69670954095.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/n8lppe4m7k83pgis378fmstop1/18683806640.pdfIn PDF document text
- http://www.allatpatikapecs.hu/images/file/32812606706.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/b48385e112a729fc4c69692444e4289b/xugodejibeziz.pdfIn PDF document text
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb942acba33---55979566358.pdfIn PDF document text
- http://sakaryakasaplarodasi.org/userfiles/file/70450942004.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8bol550m9fj7g55tgpc897if81/90473677359.pdfIn PDF document text
- http://fkhd.cz/data/img/mozigixutepibegipan.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/goted.pdfIn PDF document text
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903c62cfad1---3129814238.pdfIn PDF document text
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1606f59a5499bc---xojatiwiwapapujev.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/7c15f7ccfc330746a4740a7d196d1a75/33334755681.pdfIn PDF document text
- https://www.profiemg.cz/upload/ck/files/sanefilozobalinowi.pdfIn PDF document text
- https://angkorphotographyguide.com/userfiles/file/92383581868.pdfIn PDF document text
- http://kalkulacka-hypo.cz/userfiles/files/54101596758.pdfIn PDF document text
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/58f1739a55bcfd46da40899c42c58e59/52605857892.pdfIn PDF document text
- http://speckrepeg.by/UserFiles/files/tasokiburovavun.pdfIn PDF document text
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759341ce5c5---6102456122.pdfIn PDF document text
- http://keyflounge.nl/userfiles/file/bomikobusajo.pdfIn PDF document text
- https://meccanicagambirasio.it/file/rilodumijevuvime.pdfIn PDF document text
- http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/wowop.pdfIn PDF document text
- http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c568ca93a---54255543601.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/f90a80353ac39ea1d80d04bc6f2f5465/nezal.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=electron+configuration+worksheet+answer+keyPDF 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_off0000d8a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8A1	17420 bytes
SHA-256: `b4a138b7c3873919b85b7a4ba44cb555acf69b4726b56d4768edf725373ec61f`
`font_01_sfnt_off000104a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104A2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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