PDF malware analysis — malicious · 29dbc1d7b049a776

MALICIOUS

PDF

86.4 KB Created: 2021-07-17 05:39:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 8be2f28e82f04876e4e0a203890fd558 SHA-1: f06ed770b85e16248711ea6eefe7f4d7ffc67392 SHA-256: 29dbc1d7b049a776cc6abc9254667ab6235cdab4cf5daa3708bbae86100e77d0

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as a phishing trojan. It contains multiple embedded URLs, suggesting an attempt to redirect the user to malicious sites. The PDF structure itself appears to be malformed, with duplicate object bodies, which is a common tactic in obfuscating malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9526

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/razvivatel/yapz/~3/um1bUVUAM38/square?utm_term=dr+young+vet
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8615a1f8f93f64ac0c26/1626113557114/gas_in_plural.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f129a36e3a8560b3d2bd6c/1626417571319/city_racing_3d_for_windows_7.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f212e654c26a0cc3eec9d4/1626477286290/18570980334.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f138ca9014c44c5290c953/1626421450709/over_the_place.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f21a29ab5c5e578897865d/1626479145743/difference_in_head_of_household_and_single.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed3f93493b4338208b5fb3/1626161043321/87175752828.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d2eb1d90976278aa01da/1625871083297/instagram_private_profile_without_human_verification.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e76a22a3638a455af59d9f/1625778722119/nuclear_decommissioning_agency.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_off0000f24f.bin` `3fb93cba98dee31741e0365e433dc9945ea66c6d3c9a33a26353b950cf55a17e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF24F	10096 bytes
`font_01_sfnt_off000108fb.bin` `ea60e40718d68c599b013f04fdb1f118c45d3a12e0301fd19b3784503a5c6eb2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108FB	17120 bytes
`font_02_sfnt_off000135d8.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x135D8	16792 bytes

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