PDF malware analysis — malicious · 173f8a1db42f30f6

MALICIOUS

PDF

78.5 KB Created: 2021-03-16 18:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 6fc32f49e473c2afbe97df4f87de0bf1 SHA-1: 101cf35b166af7b11e078cb9fbec57de37db196b SHA-256: 173f8a1db42f30f653afe9a03cd9c6eabd248cd6709d5c8cbb91fbef105407f1

134 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 a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9967

Heuristics 6

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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/award?keyword=ssc+descriptive+paper+format+pdf PDF link annotation
- http://vimobewawulipiz.mypressonline.com/zadog.pdfIn PDF document text
- http://luziniwanemek.sportsontheweb.net/status_code_03-80-00.pdfIn PDF document text
- http://vamoktin.ru/aplikasi_video_di_pinterestih6qb.pdfIn PDF document text
- https://pofekabebo.weebly.com/uploads/1/3/0/7/130739116/zugupofubov.pdfIn PDF document text
- http://lebedugipul.mywebcommunity.org/openly_straight_book_summary.pdfIn PDF document text
- http://retys.space/2797875425179lmz.pdfIn PDF document text
- http://sweetygirl.club/how_to_open_vitapur_water_dispenserlj03k.pdfIn PDF document text
- http://mazikopipovix.mywebcommunity.org/us_fda_21_cfr_part_11.pdfIn PDF document text
- http://gopadaxin.mywebcommunity.org/buzafulupowerenegemis.pdfIn PDF document text
- https://vedudogekikusiw.weebly.com/uploads/1/3/1/1/131164168/nubobuf.pdfIn PDF document text
- http://bejisosubonito.sportsontheweb.net/norizumuvinit.pdfIn PDF document text
- https://rugitaroginuwim.weebly.com/uploads/1/3/4/7/134768051/bebunetaka_votarowawez_tonotegife.pdfIn PDF document text
- http://lnstagramcopyrightmanagement.com/7359026351871r7i.pdfIn PDF document text
- http://lipazegeboludep.sportsontheweb.net/votililapafikasivul.pdfIn PDF document text
- https://vuzodafolo.weebly.com/uploads/1/3/4/7/134732359/0a6735.pdfIn PDF document text
- http://zawopim.mygamesonline.org/diguxebejosuki.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://desetezovadu.epizy.com/35193637543.pdfIn PDF document text
- http://supuwevul.atwebpages.com/fallout_4_companions_likes_brotherhood_of_steel.pdfIn PDF document text
- http://vonimamodiji.rf.gd/21938829393.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/da16bc38-7c02-4d2c-9b0c-ba87534c35e1/fundamentals_of_game_design_third_edition.pdfIn PDF document text
- http://pumaxuno.epizy.com/types_of_placenta_in_mammals.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9fd614a-f90b-4904-9f50-15f904628742/95418980996.pdfIn PDF document text
- http://derovis.rf.gd/glencoe_mcgraw_hill_science_8th_grade_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8b03e532-b03a-4d01-9401-aeffb81be682/gta_5_update_5_crack_v5_3dm.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1f15eec-5f0f-452d-9c9e-dddf44a7f331/polarazurusebuvada.pdfIn PDF document text
- http://kuxomexepus.epizy.com/60546754358.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_off0000f59b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF59B	5432 bytes
SHA-256: `336592894c2041828303cf550358433e3d250774494685e7362feacd72b31db9`
`font_01_sfnt_off00010806.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10806	10728 bytes
SHA-256: `8a74f8767691197a0dba9f0a9ecb576f9b8ec7d7db5b5ba64e447646ba8b9b3c`

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