PDF malware analysis — malicious · 94337fa1c1a1c72f

MALICIOUS

PDF

93.1 KB Created: 2021-07-16 00:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 5a4e415731e54838a5545df73e54155b SHA-1: 146843277b0efb049ade7ac57ca2c6e1008b2ca4 SHA-256: 94337fa1c1a1c72f76fff782ecbe882a70b5ea2d56611770bd9d91722d60c594

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised as a search result for 'attack on titan fenglee download', likely serves as a lure to trick users into downloading further malicious content. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious resource, potentially leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.6595

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/eaN1Eb74jJI/square?utm_term=attack+on+titan+fenglee+download+2020
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee8b901cf0e6777f32aef7/1626246032200/advice_and_suggestions.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee1603462f394a1e3f2444/1626215939370/79325924715.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9319737cb904475608577/1625895319585/68117242007.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8ff3e7718717d762f424/1626116084016/19455626009.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed156dfc46f1629a017581/1626150253282/38061685826.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7eb959713006cbe0da5b/1626111674081/how_to_restore_deleted_messages_in_messenger_android.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fba1.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBA1	16792 bytes
`font_01_sfnt_off000113ae.bin` `96bf4f35f392a4557b3a7e6346cb63e7bca2db4a2a673f4ea27fac6a62e2b38c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113AE	2516 bytes
`font_02_sfnt_off00011e81.bin` `d718c0f74de35bcd5f9790b0d3ba616217ba9ed8a2a7d937a564d63a5aafdf14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E81	10784 bytes
`font_03_sfnt_off0001376a.bin` `5af11e2b68c36dbf06ce9c7a23577799309c5d9312d2c345b224385caf9e4fb2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1376A	18460 bytes

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