PDF malware analysis — malicious · a15afc01ef3d6dda

MALICIOUS

PDF

80.4 KB Created: 2021-03-21 10:03:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 4740e29af7f944afa33c87c96d09d6f0 SHA-1: a921fdeeab6921c6a33b9fb6b8c766ca9d5014c0 SHA-256: a15afc01ef3d6dda9873b84bf7845c6a6cde5e9ffc783e3d5ecf032a613270b8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to potentially malicious domains, identified by heuristics like PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS. The primary URL, https://maypoin.ru/strik, is likely used to redirect the user to a malicious site. ClamAV also detected this file as Pdf.Phishing.Trojan, further supporting its malicious nature. No scripts were extracted, but the document structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://maypoin.ru/strik?utm_term=finding+area+of+triangle+using+sine PDF link annotation
- https://sigoberedida.weebly.com/uploads/1/3/4/5/134594083/joxakubikoxowesopub.pdfIn PDF document text
- https://liwetevafiwa.weebly.com/uploads/1/3/4/0/134096648/1628720.pdfIn PDF document text
- http://leludezoz.scienceontheweb.net/ropexigew.pdfIn PDF document text
- http://daravto18.ru/can_i_give_a_kindle_book_to_someone_else19cfm.pdfIn PDF document text
- http://nnorm-id.com/m-audio_keystation_88_mk3_manualo2ja0.pdfIn PDF document text
- http://findssldz.xyz/green_bowling_tips_for_beginnersh7hw8.pdfIn PDF document text
- https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/c68e1.pdfIn PDF document text
- http://mp4.design/quran_in_english_and_urdu_free_downloadryxwa.pdfIn PDF document text
- http://wijasagasipode.getenjoyment.net/what_is_3m_health_information_systems.pdfIn PDF document text
- http://samo-katim.ru/introduction_to_analysis_wadeggd7w.pdfIn PDF document text
- http://urro-hu.com/how_to_buy_flesh_eating_beetlespn080.pdfIn PDF document text
- http://thehensleys.org/surah_mulk_recitation_with_urdu_translation_mp3ncore.pdfIn PDF document text
- http://kindraretterath.com/99037464910g1t4h.pdfIn PDF document text
- https://xoresobo.weebly.com/uploads/1/3/1/4/131407398/pijuba.pdfIn PDF document text
- http://gukiduwonaxinef.getenjoyment.net/voburopiwijodazi.pdfIn PDF document text
- https://novifutifodex.weebly.com/uploads/1/3/1/6/131606636/lotikavigemofuz-vatibifive.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/64748eba-27e8-4a3b-a267-afd9717f4542/91200192136.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/afe1e8fa-6329-4d8d-a018-1a39d2be0ae7/kirozeto.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a95f41c0-104d-4b78-be39-7ee7afc7055f/8688419716.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f071e21c-5645-46ad-a23d-24cf016c9158/65087603571.pdfIn PDF document text
- http://tagijonegularol.myartsonline.com/maze_runner_3_full_movie_google_drive.pdfIn PDF document text
- http://nufulavidibime.myartsonline.com/94485728364.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e731.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE731	5028 bytes
SHA-256: `f093c50e5ad970546c0041b38c993c1295cf2ad072a63a4d06eef3bfc92b1a16`
`font_01_sfnt_off0000f863.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF863	11108 bytes
SHA-256: `4eff8aa762aa708fc80190538eaef2a530da61e9a3fc9c634a8b6c24920f9334`
`font_02_sfnt_off00011e68.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E68	16244 bytes
SHA-256: `29129b6cd47f3def73d41e43b993ec124b59e2b85bd4edca9f3108fcdecce04e`

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