PDF malware analysis — malicious · 0e70808edd4618cb

MALICIOUS

PDF

90.4 KB Created: 2021-04-19 02:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ee59b694890a6e2a308efad634451cf8 SHA-1: d31e3637f4c1d461fcf55826bb8465bf205e2e25 SHA-256: 0e70808edd4618cb9df3853c1928a6dd529e37b6ad1ed17ffa366ac7945f113c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to a 'battery change' and uses wkhtmltopdf, suggesting it's a generated document. The presence of embedded URLs, even if some are marked benign, indicates an attempt to redirect the user. No scripts were extracted, but the overall structure and heuristics point towards a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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
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 https://www.a1touchsolution.nl/sites/default/files/64517041799.pdf
- https://www.blplegal.com/sites/default/files/webform/8025899801.pdf
- https://www.blplegal.com/sites/default/files/webform/32112495638.pdf
- https://aboss.by/sites/default/files/webform/tatesejozamelifat.pdf
- http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/87706268510.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=dsc+alexor+change+battery
- https://community.princeton.edu/system/files/webform/wijudabopijobomoxusosul.pdf
- https://printandmail.princeton.edu/system/files/webform/zupedofijemurak.pdf
- https://ec.europa.eu/eip/agriculture/sites/default/files/webform/44438097533.pdf
- https://www.vub.be/sites/vub/files/webform/pagilavamuvawasaxega.pdf
- https://lib.asu.edu/system/files/webform/vabomabexajamoja.pdf
- https://campusrec.princeton.edu/system/files/webform/jelozubunumi.pdf
- https://printandmail.princeton.edu/system/files/webform/21250884575.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010d36.bin` `619e3f1feb599b446b23cd8e96307827b6271df62445813fd46fae31139a3489`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D36	5372 bytes
`font_01_sfnt_off00011f87.bin` `86a95c2a327437ff58198f26020fc0162812b2553e1fcdfa8eacfa9a901e68b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F87	11344 bytes
`font_02_sfnt_off00014667.bin` `f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14667	16144 bytes

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