PDF malware analysis — malicious · ad3acb7d67b8db87

MALICIOUS

PDF

84.0 KB Created: 2021-03-22 06:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 35226132997138784dddd801b422ef3f SHA-1: 52f0d162a2e8e2711042c797c6f6deb529cc832a SHA-256: ad3acb7d67b8db87fc9937e0e73327c8c7a5d98ade3d330ee3e1cd443125f0c8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that, when clicked, likely leads to the download of a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of external URIs suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'beginner placement test english pdf' which serves as a lure.

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://resalured.ru/award?keyword=beginner+placement+test+english+pdf
- http://dutov.org/tinuxazegn8el.pdf
- https://cdn.sqhk.co/wufevinek/1pCZeVS/kit_dream_league_2019_manchester_city.pdf
- https://cdn.sqhk.co/buwuvibija/gdGlhhY/troom_troom_en_unicornio.pdf
- http://muvetepogewa.22web.org/xomitud.pdf
- https://cdn-cms.f-static.net/uploads/4406809/normal_6048cc897ff83.pdf
- http://zovofuti.mygamesonline.org/california_lease_agreement_template_2020.pdf
- http://dufifudusimube.mygamesonline.org/nufuxunedules.pdf
- http://skidki-day.store/leroy_merlin_scellement_chimiquekj3kn.pdf
- http://dalidusiz.mywebcommunity.org/essay_writing_examples.pdf
- http://jalojewaga.mypressonline.com/attachment_theory_book.pdf
- https://cdn-cms.f-static.net/uploads/4457847/normal_601a298282cca.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://tarikax.epizy.com/my_pelonis_space_heater_stopped_working.pdf
- https://s3.amazonaws.com/kodipopujufipig/15792826165.pdf
- https://s3.amazonaws.com/kobivimelelo/hearthstone_frozen_throne_adventure_guide.pdf
- http://gagolugumetuvo.epizy.com/19906975898.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
- 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_off0000f69b.bin` `56d9fb6820a3e50b2403c649e9e439ede8145f3fdc68df51e4ca42e4c9781b78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF69B	5616 bytes
`font_01_sfnt_off0001098c.bin` `c63689e1662463b3a92897b873fbe5fe6a16a8fbc1b04163781af2fdf6bf782e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1098C	10768 bytes
`font_02_sfnt_off00012d6d.bin` `a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D6D	16204 bytes

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