PDF malware analysis — malicious · 5c050b66367beba7

MALICIOUS

PDF

79.1 KB Created: 2021-07-19 02:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 4e9db5b3f368ed9b3c3052397aa065f7 SHA-1: cdad467ebbee1611d0b63a951dc3473ac0ca39a1 SHA-256: 5c050b66367beba7d91105b29ec90bf23aa3f5e27d7640c15a99767fc127bf3f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. While no scripts were extracted, the PDF structure and embedded URLs suggest an attempt to lure the user to malicious content, likely for phishing purposes. The presence of duplicate objects is a common obfuscation technique in malicious PDFs.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/iXsW93xxTQA/square?utm_term=mashed+chickpea+fritters
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f2ecb229712869f0618a69/1626533042086/concession_in_meaning.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4b15226e2e727c2712454/1626648916362/85190076848.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e95c5918245d33f18366e6/1625906265503/sakaxekevatutukezokov.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8243a5c1b84600341aedf/1625826362744/past_tence_of_bring.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e81e9c872c4c6263c779b9/1625824925086/applied_strength_of_materials_6th_edition_answers.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8d213cb474813b85bb425/1625870868085/antacid_tablets_usually_contain.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f12e14d1d8e65aae86fcfa/1626418708713/gawazububilu.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f40889ac77840235721ce3/1626605705431/kubosaleforagale.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee7c540a53c127f5dc33e2/1626242132980/blue_and_orange_mixed_together.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_off0000d51e.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD51E	16792 bytes
`font_01_sfnt_off0000ed35.bin` `b351c6bc19f71ec25d8c4689db6c4a039a77e6b98ee18eb99750d680e1e008d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED35	10532 bytes
`font_02_sfnt_off00010555.bin` `3a8af16a9159015a7f237252664361d1bc771e0d430eea4e66439e0954038a7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10555	16628 bytes

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