PDF malware analysis — malicious · 9b256b30d6452552

MALICIOUS

PDF

97.2 KB Created: 2021-07-13 00:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 9d4d76034a6e1284dba98ad770deb850 SHA-1: 1547400e8c2a3be535c1b7a5e7e443ae13e54e1a SHA-256: 9b256b30d6452552d605556d5c93ae48e823e321d0fd53735c00bd97b6b98db5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL points to a Squarespace domain, which is often used for hosting malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it may contain embedded JavaScript or other code to facilitate the phishing attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9444

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://feedproxy.google.com/~r/sq/ugae/~3/ZV5PD9BTPXI/square?utm_term=introduction+to+analytical+chemistry+notes
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8f49f83a7f26ecd179df/1626115913944/wugaxefawetezinalarixugo.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e86a4836ee9e0d9b3c1b83/1625844296282/dog_biting_legs_and_feet.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec935ac81c37306b300b14/1626116954284/minecraft_skins_pictures_girl.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7b8be7be683581ce0d9ff/1625798847018/gangavalli_assembly_constituency.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7d707fdc75e32ab075f80/1625806599727/rakobabov.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecadc0a9a8dd5e31c79fa9/1626123712578/afk_arena_buying_guide.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecae91ad57c823365758e0/1626123921735/79889868165.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e86624cb142a1539d7460e/1625843236247/johnny_hoe_cakes.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_off00011720.bin` `47619173f72c2db13dc4716c06372a4235edab8da070d202f4153ade58aa9eab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11720	10800 bytes
`font_01_sfnt_off00012fd3.bin` `11ade5c230711f687ce8160317464eb058bd83502e6fd67d4bdac6b2cb8c3ccf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12FD3	18256 bytes
`font_02_sfnt_off0001602c.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1602C	16792 bytes

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