PDF malware analysis — malicious · 877b1efa458dc6ec

MALICIOUS

PDF

81.8 KB Created: 2021-07-14 04:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-24

MD5: 88cad7d3e641ca39d01efa1070cc6734 SHA-1: a288c9f7df7fe64c5252176508355c8a412c0952 SHA-256: 877b1efa458dc6ecc6d032dffa63d8bed2d689c8c1d8b46fbc4a9e7d1a40eb71

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 malicious score 0.5063

Heuristics 4

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://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b76bf840dfb---58504730684.pdf In PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/44d4df29c754d941d424f3d153664752/xojirebonaxif.pdfIn PDF document text
- http://sowitech.vn/upload/files/mixodatigomop.pdfIn PDF document text
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/tle7e9b5trrnhsjsnomk4psr2g/45175351917.pdfIn PDF document text
- http://stevis.cz/files/file/vutibejaxufulekuw.pdfIn PDF document text
- https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/0m7hov33l0t0m4kdp7tune706u/57763355875.pdfIn PDF document text
- https://cooperspick.com/files/8018700614.pdfIn PDF document text
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c0bc3ed6d---delatemakazobolepa.pdfIn PDF document text
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4ae856dfe---xarotabufuru.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d15cdbd586---53337895182.pdfIn PDF document text
- http://namuvaldymas.lt/userfiles/file/domiligesizetevinulo.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16073759139a4c---12536964191.pdfIn PDF document text
- http://casier-a-bouteilles.fr/file/lowufofoxinoxazizupusew.pdfIn PDF document text
- https://stijsr.com/userfiles/file/5883261644.pdfIn PDF document text
- http://atek-ent.com/upload/file/40121852602.pdfIn PDF document text
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/94041d0c71f32c555199e2d3e3cd818e/savojivadudomerozojak.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/qq08jku3ud7guk53vgd6kemdb5/57540877653.pdfIn PDF document text
- http://askort.pl/Upload/file/844957045.pdfIn PDF document text
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/2kr0di0l32aqaihomv59no865a/muzilifewaner.pdfIn PDF document text
- http://vizugy.hu/uploads/files/delabakovinagonevison.pdfIn PDF document text
- http://dui-antidote.com/images/userfiles/file/puzunepinividemavurola.pdfIn PDF document text
- http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c975e1cb625---vetibetil.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/6kqno37gt2utkv8qh18c2dti50/tefasonidegonu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=art+of+war+leadership+quotesPDF link annotation
- 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_off0000ec24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC24	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001043b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1043B	10804 bytes
SHA-256: `71a5c139f076ddd273ea5df98cc9d2509cf73a827063510a26a453171de52244`
`font_02_sfnt_off00011d21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D21	16844 bytes
SHA-256: `f075818340c7b2301366cbcf2336cc1fdff32e3fa960f0a985c0e4e9536f0745`

Open this report in the interactive analyzer, or submit your own file for analysis.