PDF malware analysis — malicious · 0e57f27b6db08740

MALICIOUS

PDF

74.8 KB Created: 2021-09-19 23:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 3add19dcf7a0b74ac68683b92af43bea SHA-1: 400b8f22edc5b4f27ca280f41d8ec057e8d024ce SHA-256: 0e57f27b6db087404ec0bce3d7c317ae4563cc235012a00d6a0cc8729eefa226

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, a common technique for exploiting vulnerabilities or redirecting users. The numerous external URIs, including those hosted on compromised CMS uploads and disposable hosting, strongly suggest a phishing or malware distribution campaign. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.7965

Heuristics 6

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://medvor.ru/uplcv?utm_term=watch+mulan+2020+online+123movies PDF link annotation
- https://webvitamin.vn/app/webroot/uploads/files/lurumixutegom.pdfIn PDF document text
- http://jiangsutravel.kr/userfiles/files/20210910_184849.pdfIn PDF document text
- http://etepi.pt/js/ckfinder/userfiles/files/rufipuju.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140aeb20f15e---10814451558.pdfIn PDF document text
- http://savemaxint.com/files/file/15496388211.pdfIn PDF document text
- http://sadiqandsons.com/userfiles/files/xefakegusogokejafogadu.pdfIn PDF document text
- https://icrs-as.com/userfiles/file/jelolavuroli.pdfIn PDF document text
- http://honghuibio.com/d/files/78344896510.pdfIn PDF document text
- https://promise-land.com/upload/file/gekovavijigasumutemoku.pdfIn PDF document text
- http://zoekidsworld.com/userfiles/file/jinevexefubudol.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/62111545628.pdfIn PDF document text
- http://pillshop.ru/uimg/files/71642112275.pdfIn PDF document text
- http://meubelenindex.nl/images/uploads/tojep.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/9fa159a500f958c6daca9d87309f49cf/xadusasipixoniribiberulav.pdfIn PDF document text
- https://webmakler.org/userfiles/file/11515853547.pdfIn PDF document text
- https://strategie-forex.com/ckfinder/userfiles/files/wizijipolomileretifude.pdfIn PDF document text
- http://mcap.cz/images/uploadedimages/file/xegoxudakanitadirexom.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4cc9a4e24---vitita.pdfIn PDF document text
- https://taichielite.com/louis/taichi/ckfinder/userfiles/files/dikanididutazadi.pdfIn PDF document text
- http://nsfeed.com/_UploadFile/Images/file/fatoka.pdfIn PDF document text
- https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/0b7902d63c1d0b10a8bb84d577bdae6d/mesapemaneduwi.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130c924664f7---10095023053.pdfIn PDF document text
- https://ags-car.com/upload/files/16480505016.pdfIn PDF document text
- https://iphone-odklep.si/vsebina/70512549147.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_off0000d0d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD0D6	11020 bytes
SHA-256: `47988770ea07027681aa2d9dcd7afa1e114f4b7203309c8bb572296b23c8d035`
`font_01_sfnt_off0000ea73.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA73	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010285.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10285	17368 bytes
SHA-256: `835bae89e51b0b13b62cbf9b3f7c7fde347ab100295dbfa28df6fece9bc873cc`

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