PDF malware analysis — malicious · ed7bd20c5c8ab46e

MALICIOUS

PDF

69.3 KB Created: 2021-09-17 21:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: fb6d014f32615b324a366d9f191927dd SHA-1: 6e8251f03e13ff82836eaa7c89e93e661eb21457 SHA-256: ed7bd20c5c8ab46ee55ad9c77e0ad808314e0d6638d92f8a59f1a368ba0bbf8c

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier, indicating malicious intent. It contains a large number of embedded URLs pointing to various domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body is heavily obfuscated and unreadable, but the presence of numerous external URIs and the overall heuristic firings strongly suggest a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9036

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://nomylo.ru/uplcv?utm_term=drag+and+drop+in+android+studio PDF link annotation
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f48eef23de---50194263796.pdfIn PDF document text
- http://hc6999.com/userfiles/files/98750158894.pdfIn PDF document text
- https://pracowniatechart.pl/fckpliki/file/83334447103.pdfIn PDF document text
- http://j-line.ca/fck_upload/file/72031320726.pdfIn PDF document text
- http://vinaktv.com/storage/ckfinder/files/satasaxeba.pdfIn PDF document text
- https://opsclown.it/ckfinder/userfiles/files/63420290794.pdfIn PDF document text
- http://bouwbedrijfansing.nl/userfiles/file/34300332446.pdfIn PDF document text
- http://yourbuilding.ru/userfiles/files/71855960491.pdfIn PDF document text
- http://zpb-maciejewski.pl/upload/fck/file/jabif.pdfIn PDF document text
- http://www.cavice.fi/tiedostot/files/vikuzixiguxizi.pdfIn PDF document text
- https://avukatwebsitesi.kocgrafik.net/upload/files/javub.pdfIn PDF document text
- https://burstallconrad.com/editor_files/file/mifobomu.pdfIn PDF document text
- http://bluecreator.biz/ckfinder/userfiles/files/89470658638.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16142ffa21a454---xovuwozasur.pdfIn PDF document text
- http://studioingegneramato.com/userfiles/files/bufazarugijanamidugikozox.pdfIn PDF document text
- http://chinalabware.ru/d/files/nadalope.pdfIn PDF document text
- https://xn--nmqu14inmf.com/upload/files/xafejesitemovapozaxem.pdfIn PDF document text
- http://ceraunavoltapizzeria.it/userfiles/files/23260338368.pdfIn PDF document text
- http://abwcoliseum.com/uploads/files/sosil.pdfIn PDF document text
- http://sushibelovo.ru/files/jemutujidenuditenus.pdfIn PDF document text
- http://cloudinfo01.smartevolve.com/images/ckeditor/files/tasikivixiva.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_off0000b1c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB1C8	10492 bytes
SHA-256: `70b53892c3c96bd83800d3837757261b6acd5c6ff613dc6fe195760b69f82e82`
`font_01_sfnt_off0000c97d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC97D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000e18f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE18F	20696 bytes
SHA-256: `5abe989075a67b767ef7182d3b890b644fe666a97a35014c54a1b2730a4ccb1c`

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