PDF malware analysis — malicious · c62dc08c752659ae

MALICIOUS

PDF

78.5 KB Created: 2021-07-13 19:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 5a27048a3f04210325633ef07df27b95 SHA-1: 289a6306216a4ad24c71c56d73db6e86fd26c792 SHA-256: c62dc08c752659ae0e6a8d109cff41466bb10184df546c4b0be42896f02ec617

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains an embedded URI pointing to 'https://ketchas.ru/square?utm_term=climax+community+definition', which is the primary indicator of malicious intent. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its true purpose, but the presence of the malicious URL strongly indicates a phishing or malware delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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://ketchas.ru/square?utm_term=climax+community+definition
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8def4cc7c0864592358fa/1625874164929/23932694097.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e77b29e6052d54f78a81c2/1625783081301/thomas_delauer_fasting_schedule.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7938dd56f0f36126d0349/1625789325823/linekenulibonirexozasife.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60eca52e9cb57f380a7ac5e1/1626121518271/2_hours_non_stop_worship_songs_with_lyrics.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7939d4261ba79805d1e24/1625789341630/39632463108.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edbadd095dee4134507c30/1626192605661/the_8_noble_truths.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed36026ebf0d48ea8d0770/1626158595079/so_far_and_so_forth.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e79b3c97884458c99deeef/1625791292218/dolijusanoxupo.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_off0000d151.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD151	16792 bytes
`font_01_sfnt_off0000e968.bin` `35cd9ef7892e00d96eedc221c811ca0bced0fdd9ae51ff6cf3bfad7a64a68e04`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE968	10716 bytes
`font_02_sfnt_off0001020a.bin` `f7816125dbc29c0fdd5b78df095ddfbadc6ed623ba6a9f7761bdd4ed18aa2b74`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1020A	16296 bytes

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