PDF malware analysis — malicious · d9d5b6a938a3255a

MALICIOUS

PDF

69.0 KB Created: 2021-03-06 14:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: 91533ae6629a30b8a02d3b169c157b7f SHA-1: 6aa306f1de9fe9d42fd47df8cf0b8fdb2a4a1404 SHA-256: d9d5b6a938a3255aace492b3657ecf989fab6dd9d6bb820e31c6de64c94ea0c4

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, pelibifir.ru, which is likely used for phishing or to host a malicious payload. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM suggests the PDF is part of a link farm on disposable hosting, further indicating malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://pelibifir.ru/wix?keyword=ph+calculations+worksheet+answers+chemfiesta PDF link annotation
- https://cdn.sqhk.co/bupedamarib/Y6quiic/zuwovozupuxamirekef.pdfIn PDF document text
- https://cdn.sqhk.co/xibetevoxaj/gdzrudK/nba_now_mobile_basketball_game_mod.pdfIn PDF document text
- https://cdn.sqhk.co/xadeviro/bUiewou/61129906845.pdfIn PDF document text
- http://naturfresh.space/popular_piano_songs_for_beginnerskqxtm.pdfIn PDF document text
- http://zaxanoxejem.iblogger.org/39132604714.pdfIn PDF document text
- http://xogunajeraxuda.mywebcommunity.org/34428634382.pdfIn PDF document text
- http://wojisub.mypressonline.com/lg_tablet_stuck_on_verizon_screen.pdfIn PDF document text
- https://cdn.sqhk.co/sirejeforox/jjdhaCw/rotimadegavewakitofawage.pdfIn PDF document text
- https://cdn.sqhk.co/sobupepokor/rig9sgh/gavuvibokexonifimasas.pdfIn PDF document text
- http://helplnstagramcontact6088757.com/bopuligapavamulozzhqj8.pdfIn PDF document text
- http://waniwidolo.66ghz.com/chemalert_user_guide.pdfIn PDF document text
- http://lijijuzopos.iblogger.org/dedumemol.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://8a7e94d2-1b07-4399-8a7b-cfebf1eb419e.filesusr.com/ugd/e78b77_3973a687310b485c9b746f438bcad263.pdf?index=trueIn PDF document text
- https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_e07bddacec9a4d75ab118ff4f018e04e.pdf?index=trueIn PDF document text
- https://ecf8b3bd-8201-449f-a39c-156acd88681e.filesusr.com/ugd/97634b_edaa466af0554dc9958f7704a324cc22.pdf?index=trueIn PDF document text
- http://muzoxed.rf.gd/bahubali_1_songs_telugu_320kbps.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/452dad1f-71f7-4feb-8ff9-854a85d19847/komodisolawirevabodetazen.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c865f733-f49a-4794-a7d3-9ecc7c870001/matozotovixuluwasixebo.pdfIn PDF document text
- http://tevefetilojas.atwebpages.com/schlage_keyless_deadbolt_wont_unlock.pdfIn PDF document text
- https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_2d183f10eaf0425ba9c5fea4650619f0.pdf?index=trueIn PDF document text
- http://tadudaxejede.epizy.com/bus_times_app_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f9637cc-0b0d-4580-89a1-0af12f486e7b/16130039402.pdfIn PDF document text
- https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_7c7d90a788724a7281186b29d594bc5f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3eb9793e-12d4-480e-ac08-710354ee7e10/conair_weight_watchers_scale_app.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_off0000d137.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD137	5280 bytes
SHA-256: `99ebc5a5b6d44ee1da9290605f5564a97524d6a0c2a7d06f93053bc12c171020`
`font_01_sfnt_off0000e313.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE313	10288 bytes
SHA-256: `3a1052bb08f6bc9bf73102b8af722612317808122b51eca68990db22619f0114`

Open this report in the interactive analyzer, or submit your own file for analysis.