PDF malware analysis — malicious · c65b49f72bc27c33

MALICIOUS

PDF

95.1 KB Created: 2021-07-12 20:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 2d0c771eceb38f44dcc1358b115ea035 SHA-1: 417b1e0f5116c1099684899415b4e6b5467b760d SHA-256: c65b49f72bc27c337f3274b9513e87a7c873847fc5351ce5c02c4fcf77174cb1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to a potentially compromised or malicious domain suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing attack vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9894

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/S-4CHg4Qmwo/square?utm_term=2021+shelby+gt500+for+sale
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e948a7b67368755968e963/1625901223748/79651305872.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8c2a9b7022a177a596258/1625866921618/sex_buddy_meaning.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80c28f4d7c53d8b152495/1625820200824/91616932208.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e76cd4c16c9823cf027bd9/1625779412376/55200062319.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7a5d947cc46ca1279b7f/1626110557451/new_version_of_among_us_pc.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7fce5f604029b9910c81/1626111950746/seven_deadly_sins_full_episodes_english_dubbed.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e90bccc14ff043cd5c0b06/1625885645009/13899348072.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7f7b760c9e2bcf4292f6/1626111867506/the_serious_jazz_practice_book.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8ff22c14ff043cd5b6e35/1625882402432/wunimidawamozejotuv.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_off00011115.bin` `c95551fdc41f50faff43449b79f852b80f5f0d985c510a4abf7adf0beefa31c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11115	17476 bytes
`font_01_sfnt_off00013e86.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13E86	16792 bytes
`font_02_sfnt_off0001569d.bin` `8ef574ed87f8a83aa002b2a802fd9a5bb9736bcb39179f31a654fb606dcb88bb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1569D	10884 bytes

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