PDF malware analysis — malicious · a1a78102b1ec8838

MALICIOUS

PDF

80.1 KB Created: 2021-07-15 23:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: d0e7333ddc2b6e0d92d58b794ffa4c6d SHA-1: ca110c78a57050238348cad57160ddc9117e2327 SHA-256: a1a78102b1ec8838e7d509fcdd1f461a659c7e4fc1f7052e5a7ab67bb8d306cc

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains embedded URLs, one of which is a Google feedproxy URL that likely leads to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the ClamAV detection suggest the document is designed to redirect users to a harmful destination, likely for credential harvesting or malware delivery.

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/razvivatel/yapz/~3/-MXWpcYQ7kA/square?utm_term=michigan+booster+seat+laws+2020
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee5eb61f51426150cf4363/1626234551303/jufavafuwatub.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee57d07426fb5109f66d36/1626232784702/45625065148.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee52852485902f3e74d825/1626231429275/fun_for_movers_4th_edition_teachers_book.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c77509230f0e18425ff7/1625868149872/telolinazuwobasubob.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8599dbb514329faf561f/1626113433430/77939647225.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eddde637ddb5439bf6c286/1626201574547/boy_scouts_reading_merit_badge.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e95d4e3ba7d954d547e0c3/1625906510494/gozopapazatox.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8f6f337da2614570c42db/1625880307878/the_magician_upside_down.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_off0000d583.bin` `06c39f7aba0af9b96a696db3c95536ea54ae8934b3da91bc0c96abcab7984888`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD583	16628 bytes
`font_01_sfnt_off000100db.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100DB	16792 bytes
`font_02_sfnt_off000118f2.bin` `e50242b6c3c6207ed7d737cae73c848b1df33fdca05ee512660b9be19e5cceee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118F2	10968 bytes

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