PDF malware analysis — malicious · 1305f496ec848bb8

MALICIOUS

PDF

77.0 KB Created: 2021-07-14 06:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 33d8e7f56cc564feac114a0b867fcbb3 SHA-1: 9e1261e8dd4e82f076a668615ad47ce8c501fdd1 SHA-256: 1305f496ec848bb848ca229940982de1ff034f8d264f365c8f1ddc4f4d32351f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'allytemp.ru', which is a strong indicator of malicious intent, likely for phishing or malware delivery. The PDF structure itself does not contain readable content, but the presence of the external URI is sufficient to infer a malicious attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9937

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://allytemp.ru/square?utm_term=what+day+does+the+easter+holidays+start
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e826414d2175279d167df2/1625826881811/sojenurulibilapelekonizij.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8ff833f195e1e4034f644/1625882499826/93087343558.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7c888872c4c6263c40b35/1625802888299/11189806923.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee5f5fab0cb8743be6bf2a/1626234719425/fable_3_mod_tools.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9192c6e267257943a8c62/1625889068825/jurarem.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c910eebddd6e48ed9d18/1625868560516/famutegire.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee28472af4c01978fb796a/1626220615233/wikewiwozoviwor.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8c201cff58014d54340c/1626115104405/xexaxumowatovowobudimo.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee20068685745b7d12bcf5/1626218502526/doha_is_in_which_country.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_off0000cdd2.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDD2	16792 bytes
`font_01_sfnt_off0000e5e4.bin` `99e871f71bed003bac750e5f702b02f62ba0cff25bfeb8e0a46e151d860d6d78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5E4	16260 bytes
`font_02_sfnt_off00011017.bin` `b12943c12fd71e325d60e9e26a693ce21187a4ddee67de9db65e6b90f7d15b48`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11017	10348 bytes

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