PDF malware analysis — malicious · 7ae9894ba9601d39

MALICIOUS

PDF

77.0 KB Created: 2021-03-23 11:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 2a1ad9546538bee7461897c00a3773b3 SHA-1: f51c0bee6d59bdda5142cffc06a671bff7cb9603 SHA-256: 7ae9894ba9601d398751bfbdd665f8897afaf9bdcb19782c3bee7968b80c5daf

166 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. It uses a password-protected-archive lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://vilenefex.ru/wix?keyword=what+does+request+a+reprise+mean+in+science PDF link annotation
- https://static.s123-cdn-static.com/uploads/4459188/normal_5ff20851eab43.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384472/normal_5fddbc52194e8.pdfIn PDF document text
- http://zikewexer.scienceontheweb.net/jewibefazifa.pdfIn PDF document text
- http://xepuxupipe.mywebcommunity.org/vujapirofetekusoku.pdfIn PDF document text
- http://juwupexutaval.mywebcommunity.org/fapagesikorenalumumafemok.pdfIn PDF document text
- https://cdn.sqhk.co/gimexigerub/bWjjger/kafolulezilajesodufo.pdfIn PDF document text
- https://cdn.sqhk.co/kavatupopum/hbFsktL/gogo_live_biru_mod_apk_2020.pdfIn PDF document text
- https://cdn.sqhk.co/pemoxeriko/fhiibji/mokonusagupupotibifamozer.pdfIn PDF document text
- https://cdn.sqhk.co/neviragar/ijajaPF/44054814820.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392210/normal_5fe312e2801e4.pdfIn PDF document text
- https://cdn.sqhk.co/lazodadevab/1X4V0zP/venir_conjugation_present_tense_spanish.pdfIn PDF document text
- http://firobazotu.sportsontheweb.net/47825535160.pdfIn PDF document text
- https://cdn.sqhk.co/regomesu/hhhjLjb/sotelodan.pdfIn PDF document text
- http://vumexovuvelafe.medianewsonline.com/carreras_universitarias_espaa.pdfIn PDF document text
- https://cdn.sqhk.co/jopubelo/7Zgdihd/xfinity_wifi_password_problem.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482848/normal_6037aae1c3ab7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383561/normal_5fc5c8672617a.pdfIn PDF document text
- https://cdn.sqhk.co/fewesiwe/iRULih4/dokkan_battle_super_warrior_arc.pdfIn PDF document text
- http://sugameloxufe.mywebcommunity.org/rudram_chamakam_kannada.pdfIn PDF document text
- https://cdn.sqhk.co/pivatiwon/ZxFJTib/ancient_greece_battle_formations.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/degisapemifa/87189640647.pdfIn PDF document text
- https://s3.amazonaws.com/genedesowul/xisugekuve.pdfIn PDF document text
- https://s3.amazonaws.com/xokebore/love_story_theme_lyrics_andy_williams.pdfIn PDF document text
- http://tanonarimunal.myartsonline.com/nidelolo.pdfIn PDF document text
- https://s3.amazonaws.com/muwomapotumugi/kenimetiwewixosipugesiwa.pdfIn PDF document text
- http://bavotuvezomevi.myartsonline.com/master_cleanse_results_30_days.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_off0000ec98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC98	5420 bytes
SHA-256: `d3b5705bd30bb810b83c4cf7aaff062ac415910101c29e3a0714187d15d7dba6`
`font_01_sfnt_off0000fee6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEE6	11672 bytes
SHA-256: `cd08de5f4fb06fa86f669de9bb52d4d25db55463f98e65a2b8200687a8869a0d`

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