PDF malware analysis — malicious · 4a2826599492a8d5

MALICIOUS

PDF

81.5 KB Created: 2021-09-18 20:36:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 3c7d805d8227574abb529a7136ef73a7 SHA-1: 5ca7c478641f3c00093dfd7d52f39cc4bcab10c5 SHA-256: 4a2826599492a8d558373661ac8c1153375c32e35f17b3b38249e005afd56f81

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The sample was detected as a phishing trojan by ClamAV. A critical heuristic identified a 'Clipboard command execution lure', indicating the document instructs users to copy and paste content into a shell. This strongly suggests an attempt to trick the user into executing malicious commands. While no scripts were extracted, the combination of the lure and the PDF structure points to a malicious document designed to facilitate further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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 http://geobigoni.it/userfiles/files/dutagenabegetijite.pdf In PDF document text
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141f6f897800---86962730578.pdfIn PDF document text
- http://www.santamyoga.be/images/file/bupupuf.pdfIn PDF document text
- http://ebsenglish.net/_UploadFile/Images/file/46891392680.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/jobuwobufoluwized.pdfIn PDF document text
- http://scandinavia-ex.com/images/blog/file/fudubonedolu.pdfIn PDF document text
- https://magyar-logyogyasz.hu/fileok/file/70744819492.pdfIn PDF document text
- http://abacusnancy.com/userfiles/file/48663138358.pdfIn PDF document text
- http://2222.netsociality.com/upload/files/fatat.pdfIn PDF document text
- http://abpaluso.com/upload/file/linifafilonikuze.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5a0f9f6e6---21057808243.pdfIn PDF document text
- http://chinalabware.es/d/files/fulofuwitifu.pdfIn PDF document text
- http://olymp-kiev.com/temp/fckeditor/file/9242709300.pdfIn PDF document text
- http://kastely-vacduka.hu/fileok/file/bixubusavixafurav.pdfIn PDF document text
- https://kcharp.com/ckfinder/userfiles/files/16864870844.pdfIn PDF document text
- http://sinorarechem.com/upload/files/sejejiwedejeseto.pdfIn PDF document text
- http://custom-mugs-factory.com/uploadfile/files/52207497927.pdfIn PDF document text
- https://i-intelli.com/ckfinder/userfiles/files/lolarirofewulomos.pdfIn PDF document text
- http://autoklej.pl/app/webroot/media/files/58564323107.pdfIn PDF document text
- http://csc-020.com/userfiles/file/20210911131036_y0wc9m.pdfIn PDF document text
- http://www.coverseg.com/uploads/ckfinder/files/28994658468.pdfIn PDF document text
- http://carlaschroyen.com/content_docs/4664869855.pdfIn PDF document text
- http://opuspointpartner.com/ckfinder/userfiles/files/27522343390.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=android+phone+screen+mirroring+to+pcPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In 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_off0000daef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAEF	10736 bytes
SHA-256: `226103dd795796860911d61ed29efd2ed8e53f0ba16fd9946daa0056f434662e`
`font_01_sfnt_off0000f333.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF333	17580 bytes
SHA-256: `c00f24108914c9c1bbd90a27c8c744019ff34ba68f2f125899949d9f5298dc69`
`font_02_sfnt_off00012094.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12094	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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