PDF malware analysis — malicious · d48d8d73a52484dd

MALICIOUS

PDF

78.0 KB Created: 2021-07-18 03:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 7c33d570dffa23b368b2a671c12b0ca7 SHA-1: 199b137ec5ee877e0a7eec2dca67f8ff056728a5 SHA-256: d48d8d73a52484dd63c6f453220243455ce9cda084a795abc3f05175fa1e9a25

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam. The document body is heavily obfuscated, but the presence of embedded URLs and the heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggest a phishing or fraud attempt. No scripts were extracted from this sample, limiting the ability to determine specific execution chains.

Machine Learning

Nyx PDF Classifier malicious score 0.8897

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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/IdU8rIDf9lQ/square?utm_term=pisa+sample+questions+and+answers+english
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee65fc84a0477e84add26f/1626236412865/gexuvosixupav.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee43984d490f67275269b6/1626227608781/21063947045.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f104a1f8313f2e5964ccbc/1626408098028/blocking_unknown_callers_iphone.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a3ebaea6c4457b8c4310/1625859052106/degudufireriw.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e876473249a603870a3a15/1625847368043/556023656.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec949edef1ca41d5fa9e0c/1626117279028/traditional_contributory_negligence.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_off0000d26b.bin` `e10175037ca58f09ce43261b0cf62bf7cd2d0a92fe9ab1de1bb0ec8b366c5fd1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD26B	15648 bytes
`font_01_sfnt_off0000fa4c.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA4C	16792 bytes
`font_02_sfnt_off00011263.bin` `a8e69c2ff86d1142fadab16e1b38d7f68f46655c2c8c12b8621d6e83bcfa1e32`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11263	11172 bytes

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