PDF malware analysis — malicious · 912668fcbb6ce07c

MALICIOUS

PDF

78.4 KB Created: 2021-07-12 21:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 45ee167234d5b0afc3e6675949c781b8 SHA-1: 39e1aedccdaee884662fa2da74f75d278d93a555 SHA-256: 912668fcbb6ce07cd2d4894b91e171d74aafb6cf4a505753da747f45d8bc589f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was identified as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, suggesting it may be used for phishing or to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of common techniques used to deliver malware or phish credentials.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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://feedproxy.google.com/~r/sq/ugae/~3/qI_NY8u86tA/square?utm_term=easy+mince+pies
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec76bd54a52c186ce39d0a/1626109629202/how_to_pray_in_english_in_church.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7922950202184f0f6bee/1626110242394/the_golden_arm.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e860e4cb142a1539d6ccda/1625841892245/14284986959.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e920cdb67368755967cc09/1625891021865/simple_snake_game_in_c.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7f3a82b4c978cf412241/1626111802577/historical_development_of_anthropology.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e794721d61f435cef3d345/1625789554156/ratan_tata_date_of_birth_and_time.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec83bfb6dedd3ae168c0f8/1626112959936/20415443535.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8ebf9f229ba2ea8348e8d/1625877497335/gajilurunolumipomozotulef.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_off0000cf1a.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF1A	16792 bytes
`font_01_sfnt_off0000e731.bin` `e0a3fc5c1450b68611a35e4659fff9df39bf615a2f06ddef2f180781ed7c8c06`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE731	10268 bytes
`font_02_sfnt_off0000fe43.bin` `c651d1d2a1d671557820ee325778d48ff48b0d86676d130d97a1fd882f961f1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE43	17536 bytes

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