PDF malware analysis — malicious · c790f78329a112cd

MALICIOUS

PDF

80.7 KB Created: 2021-04-20 19:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9506b8dbcb8e9a6b638b74dc0960a177 SHA-1: 2accf1686c444aa6c6a706c2ea21d4be5004d394 SHA-256: c790f78329a112cd0a68a3615004ced11096d77e587c33718b753e7e68ef0305

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to Microsoft Word functionality to entice clicks on the malicious link.

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://kuzutuzo.ru/strik?utm_term=how+to+use+1.1+numbering+in+word
- https://static.s123-cdn-static.com/uploads/4384469/normal_5ff1d487d3833.pdf
- https://cdn-cms.f-static.net/uploads/4380379/normal_606a5a8055d91.pdf
- https://cdn.sqhk.co/zodozane/eVjiUdI/best_woodworking_shop_tools.pdf
- http://apelsins.space/65589200913sqfz5.pdf
- http://terugate.mypressonline.com/begov.pdf
- https://static.s123-cdn-static.com/uploads/4454426/normal_5fcf2bd506a97.pdf
- https://cdn.sqhk.co/ferobisuw/iefOw2N/notopafufopisubevajexa.pdf
- https://static.s123-cdn-static.com/uploads/4422908/normal_6008b1ef984d8.pdf
- http://zitalogeloluwiw.mygamesonline.org/how_to_use_wolf_gas_range.pdf
- https://cdn.sqhk.co/gidulikegel/hcibYl9/letatoromewofopi.pdf
- https://cdn-cms.f-static.net/uploads/4381085/normal_6020a7c7afbb2.pdf
- https://static.s123-cdn-static.com/uploads/4417129/normal_5ffa54218a86e.pdf
- http://boost-store.net/locales_adidas_performance_capital_federalak2se.pdf
- https://cdn-cms.f-static.net/uploads/4427086/normal_60149b4f1e8a0.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/fifuto/81640097261.pdf
- http://misanedajog.myartsonline.com/zepevisazexo.pdf
- https://s3.amazonaws.com/bokofapig/assassin_s_creed_3_java_game_apk.pdf
- https://s3.amazonaws.com/tejuvonixag/gigupavilaxizimowutebaki.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ffff.bin` `af928678e8991514885acea74dcd1f89b50d64e72b5958f4eb39dc0db026de27`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFFF	5180 bytes
`font_01_sfnt_off0001119e.bin` `168c50db69de67ae80b260fee8c4d86b29077c270ab94c7428df59388b4d8f6d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1119E	10508 bytes

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