PDF malware analysis — malicious · a9c92629123e22f6

MALICIOUS

PDF

76.8 KB Created: 2021-07-12 21:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: f88c9c100b61147177bfedccbae76aa0 SHA-1: 511e51227d95c49b24122b1b0ade9ee970f6a976 SHA-256: a9c92629123e22f67ca971aa0c99feabf7bdd66a02edf5d817be16cbe636169a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'garglob.ru', which is likely used for phishing or to download a secondary payload. The PDF structure and embedded artifacts do not indicate specific malicious scripting, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9937

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://garglob.ru/square?utm_term=addition+of+time
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7b6b950202184f0fa91e/1626110828008/the_law_on_negotiable_instruments.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7e13886d8930991a69b6b/1625809209009/42236579725.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e91701854c1d3b3486a232/1625888513189/13819978847.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e940ac0a287971af9ae76d/1625899180582/nowudazopeni.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec86b159713006cbe1d701/1626113713908/57505111630.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7358fe0477279409e9a0/1626108761142/wefireka.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e92730e51f1f218d6a3c75/1625892656381/dusky_skin_quotes.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e85e07d6a9e86930f6190b/1625841159292/wonizixafirusaxewabezi.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e94aaef229ba2ea8383941/1625901743032/business_license.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_off0000ce70.bin` `769b69739043d153147e36eed5d0c3fdba14be04816716a2586dea7fe2384f4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE70	16420 bytes
`font_01_sfnt_off0000f928.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF928	16792 bytes
`font_02_sfnt_off0001113f.bin` `dd85f8c8a6a763b4b290c6f737af368c2e3ceab9636b95606def2b295e6d022b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1113F	10020 bytes

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