PDF malware analysis — malicious · 44c727a7dd9e3935

MALICIOUS

PDF

85.4 KB Created: 2021-07-16 06:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 16a57d1bdd637767ed6c8ac1eaf4eaf9 SHA-1: c0b8cad6743c369f59fed28a3074ec162302b5c8 SHA-256: 44c727a7dd9e3935d4dbf1a4c6535b60b8ee5946530e6bdf38a65df8af14f253

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to external resources, suggesting it's used to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit PDF vulnerabilities or trick users into visiting malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.7164

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/UQ8tT55rDuk/square?utm_term=ant+man+and+the+wasp+torrent+yts
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0a38f26c97c3a7af714c5/1626383247204/boolean_function_truth_table_generator.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecc7b6c4f5a641a5a4465f/1626130359018/nadokurifoguj.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee5896eed6cd77ab639c66/1626232982457/kufikanovaguru.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0b29133a3ab6b17d3562a/1626387089564/xelekaza.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec9e9b7dc7460dd09d5d4e/1626119835882/gagavizutuvomududaset.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8cbcb2b8982254c49f129/1625869259223/proles_in_1984.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e958772210ba6bce13b639/1625905271592/simple_calculator_in_android_source_code.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
`stream_003_off0000eaa9.bin` `b43e09610a8a235bd63bb16f6f7f6feab71268560b9402c138411e725c177bdf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xEAA9	16732 bytes
`font_00_sfnt_off0000d298.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD298	16792 bytes
`font_02_sfnt_off0001028f.bin` `f99c151c7f674a9a91b9e95194e63f5a52ca1b8d0eaa21e91cf4f8cd9aa92f1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1028F	17552 bytes
`font_03_sfnt_off000130ad.bin` `f7e496964d7815cf6abcc13bf8ed12f33527f98208ecf392c9f4e3bd37289e3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x130AD	10700 bytes

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