PDF malware analysis — malicious · 973e60e5f7d97ab8

MALICIOUS

PDF

72.1 KB Created: 2021-10-09 16:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 6a998ffbba47fa42d526df2fbe774531 SHA-1: c878bd58092bf10e2108d5a6b2725135d3e5f59f SHA-256: 973e60e5f7d97ab8346ab3ddb8ef0096013a0cab1e781cfa2154cf4e555ca0e4

132 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, indicating an attempt to redirect the user to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to obfuscate the redirection or download additional payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.5901

Heuristics 5

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.
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://pistant.ru/uplcv?utm_term=free+real+estate+cheat+sims+4+xbox+one PDF link annotation
- http://laureysnv.be/uploads/files/zebotev.pdfIn PDF document text
- http://carsonpokebar.com/uploads/files/bojapizojafiw.pdfIn PDF document text
- http://1careglobal.com/upload/files/tixarafukeduzomakotaxu.pdfIn PDF document text
- http://etalentlink.com/uploadfile/file///2021091923570038.pdfIn PDF document text
- http://aaz.sk/editor_uploads/files/39062799704.pdfIn PDF document text
- https://at-studio.tw/app/webroot/userfiles/files/20210909_161814.pdfIn PDF document text
- http://www.saaegfpolis.org.br/ckfinder/userfiles/files/figikefavix.pdfIn PDF document text
- http://livingkaneohe.com/userimages/53053839710.pdfIn PDF document text
- http://www.gpkoaee.ru/ckfinder/userfiles/files/57712865967.pdfIn PDF document text
- http://kyochonbuenapark.iorderfoods.com/uploads/files/34056369682.pdfIn PDF document text
- http://plnjl.com/userfiles/files/75409527310.pdfIn PDF document text
- https://mallarpurnaisuva.org/go/file/pewikalig.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16145443c6c639---kokekix.pdfIn PDF document text
- http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/99768209034.pdfIn PDF document text
- http://sriraghavendratemple.com/ckfinder/userfiles/files/likinagi.pdfIn PDF document text
- https://orangcar.com/app/webroot/upload/files/voralalepekovo.pdfIn PDF document text
- http://swotaweb.com/img/upload/file/25504026402.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/161427b66a4906---12456005129.pdfIn PDF document text
- https://u15.ch/ckfinder/userfiles/files/43286926064.pdfIn PDF document text
- https://newcar-rental.com/uploads/files/202110081309152925.pdfIn PDF document text
- https://bisleriwheel.genefied.co/ckfinder/userfiles/files/winuwebevamaz.pdfIn PDF document text
- https://rzfmuhasebe.com/userfiles/file/leros.pdfIn PDF document text
- 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_off0000d2e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2E1	10792 bytes
SHA-256: `80fd5d9e1c979ba54f0e1d50187476094ebe6b56710eca257e48a3588dc53f13`
`font_01_sfnt_off0000eb98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB98	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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