PDF malware analysis — malicious · 86a5f62a1f089f56

MALICIOUS

PDF

82.3 KB Created: 2021-07-18 16:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 4328321bd9f8ad40f99660eef3a16ea9 SHA-1: bac269bc9effffec52c846130affcbc4a10656e1 SHA-256: 86a5f62a1f089f56316a2d847439a0d0b8788f831f2cc1a78a4a712d61b0f342

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains embedded URLs that point to external resources, suggesting it may be used to redirect users to malicious sites or download further payloads. The presence of embedded URLs and the ML classification strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9898

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/qQn0o4eTdIQ/square?utm_term=gcse+sine+and+cosine+rule+questions
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8c6912e50bb5a73f0dca3/1625867921542/jaxositaku.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f26d1b9c7c9f0ea991374d/1626500379884/72236018803.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f1b02f3c4128e1881048/1625878961145/73785144535.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0c0638bcf896c91593095/1626390627443/bajera.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f33d206678663e6a2f5c26/1626553632677/36840552181.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4068bac77840235720fc5/1626605195207/pixegugu.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f256981434f6354719e6d9/1626494616626/8814660249.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e868809e7b2b76b55b5e5e/1625843841159/xejes.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f2fb56ebca9b5ae8e78e51/1626536790673/88814940934.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_off0000dcee.bin` `43a0386edc66a617b065ee726a6aa656be6ab69fca2a334d0ac786f955294623`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDCEE	17520 bytes
`font_01_sfnt_off00010b1e.bin` `0bf245e8185c93217426c4e104809300f3acd0d8346ecb65d3250f5c85264193`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B1E	10648 bytes
`font_02_sfnt_off00012369.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12369	16792 bytes

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