PDF malware analysis — malicious · cb69b053b9d320f2

MALICIOUS

PDF

75.7 KB Created: 2021-07-15 10:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 4ec5a69729779fec2b8ee1887bb0baeb SHA-1: 7d7d55302e9d7df34d0e6359a9801474b218a8f3 SHA-256: cb69b053b9d320f28d852cecf38a8c1a2c9227a6a5e0b4e60a5623e6b929affc

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious URI is sufficient evidence for the attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9937

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://philabc.ru/square?utm_term=harry+potter+and+the+prisoner+of+azkaban+ps2+iso
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60efd93a3db90d3c356e5aef/1626331450684/tubidy_mp3_download_video_songs.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efcd28365a201d3c375e7f/1626328360566/wukolapelelupisi.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7cc6985664d35b0e6bf1b/1625803881175/95642816935.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60eca158e4ca3800a11a613c/1626120536510/escalation_meaning_in_software.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9aafb3b63f0898f41671/1626118831644/pikawedajapizerepix.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec91d94f2b1c51afa4e8b0/1626116569665/74806705859.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60efcf394063550b157a612e/1626328889804/32970445558.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee70342485902f3e768a38/1626239028526/dipiwuvelu.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60efddfd34f25751eec084d3/1626332669640/fafelizekumexiv.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://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_off0000c559.bin` `8937596de03ea03b87e2163c7c669ac75bd25c72fedeb5fbf8f9500018310710`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC559	11068 bytes
`font_01_sfnt_off0000deeb.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEEB	16792 bytes
`font_02_sfnt_off0000f6fd.bin` `94af5ef00aa77169ea5d9cc4848cc2fb796ed929ddc4c56bfab511dbb4df4e43`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6FD	16636 bytes

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