PDF malware analysis — malicious · eec91725d57275bd

MALICIOUS

PDF

73.9 KB Created: 2021-03-31 06:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cb32a8e2f7a72025ccc1835a718470f5 SHA-1: 9ba6ff1e642821d8e4e378f7eaa3f985a2245308 SHA-256: eec91725d57275bd2b344434975d641735e79637dc52b23dc4c4502f10a1fcf4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used to deliver a secondary payload or conduct phishing activities. The document body, though heavily obfuscated, suggests a lure related to educational worksheets.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/123?utm_term=possessive+pronouns+worksheet+for+grade+4+pdf
- http://blancer.xyz/50335639816dc1oe.pdf
- http://femonejigajape.mywebcommunity.org/lodujatebidesujarise.pdf
- http://lapogomofirubu.22web.org/59342347360.pdf
- http://keepmaxi.space/why_is_ishmael_important_in_islamjom9z.pdf
- http://vitebim.22web.org/39916661885.pdf
- http://womizepivilora.sportsontheweb.net/ibps_clerk_mock_test_free_download.pdf
- http://detonic-ufficiale.website/bivemaxiahc5r.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://kosirokuki.epizy.com/himalayan_jumping_spider_habitat.pdf
- https://s3.amazonaws.com/vososasoxumete/google_chrome_myanmar_font_for_android.pdf
- http://tatesit.myartsonline.com/67665052760.pdf
- https://s3.amazonaws.com/fosalizuzu/babua_kahela_rota_hai_video_song.pdf
- https://s3.amazonaws.com/musoxifuvitalo/alternative_to_metformin_due_to_diarrhea.pdf
- https://s3.amazonaws.com/gowebabuxogiro/dabuvomimupagawuzav.pdf
- http://sazurufupamaxa.myartsonline.com/69808435146.pdf
- https://s3.amazonaws.com/sulasatevirexo/63705122390.pdf
- https://s3.amazonaws.com/gixawetopoli/best_free_movie_sites_without_registration.pdf
- http://repogadobuwiri.epizy.com/film_benyamin_sueb_biang_kerok.pdf
- https://s3.amazonaws.com/gavapozalilup/wijureji.pdf
- http://dakisexojir.rf.gd/hp_probook_6470b_battery_not_detected.pdf
- https://s3.amazonaws.com/minabiwa/79462967654.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_off0000e0ee.bin` `734b1622732404949de76793d910af2bfb118b701456e7a1840de9130508fe90`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0EE	5576 bytes
`font_01_sfnt_off0000f403.bin` `9f35e2fc529636f9b2e68113bfd2a7f22576ec456c78f1dc05df333c83d5aa5b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF403	11144 bytes

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