PDF malware analysis — malicious · b6224c2caf4d5b18

MALICIOUS

PDF

67.0 KB Created: 2021-01-18 18:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 9a4cad8282211cbf6bb0057ad02e41c5 SHA-1: 6a9794c6541b8db6a877829626b0694c4f0870d0 SHA-256: b6224c2caf4d5b18e504a39a97aa343b8444f115caa62ba476a739cd153fe081

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/123?utm_term=probability+of+simple+independent+and+dependent+events+worksheet PDF link annotation
- https://site-1176264.mozfiles.com/files/1176264/88958781797.pdfIn PDF document text
- https://site-1173627.mozfiles.com/files/1173627/95521145299.pdfIn PDF document text
- https://cdn.sqhk.co/wuvexudid/FqjdRic/kozeronore.pdfIn PDF document text
- https://site-1178452.mozfiles.com/files/1178452/foturadebubonusamijolav.pdfIn PDF document text
- https://cdn.sqhk.co/kisunika/Os3a4gc/26860981019.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389830/normal_5f95e519e19de.pdfIn PDF document text
- https://site-1168513.mozfiles.com/files/1168513/zero_gravity_ball_shooting_game.pdfIn PDF document text
- https://site-1178814.mozfiles.com/files/1178814/82505989137.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/zidenigad/fundamentals_of_molecular_spectroscopy_by_colin_n_banwell.pdfIn PDF document text
- https://s3.amazonaws.com/xowasosuf/zavok.pdfIn PDF document text
- https://s3.amazonaws.com/jukezeluf/79662414053.pdfIn PDF document text
- https://s3.amazonaws.com/fisulefajow/wallpapers_4k_ultra_hd.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c85d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC85D	5740 bytes
SHA-256: `d33c52d67f4ccade0fbe22dadaa9058f821039b0986057dbd24963dcdd4cef9e`
`font_01_sfnt_off0000dbcd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBCD	10256 bytes
SHA-256: `eb981c03f0d15ba8283d17ea0c078fbb2f849911709caae3d1a6b416f0f6a2ef`

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