PDF malware analysis — malicious · 7832c17dfeb13b2f

MALICIOUS

PDF

79.0 KB Created: 2021-03-23 05:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 671b7e739cab96473578f8e62e3b91d0 SHA-1: 1abe5e2719d064efeab0fad6bd700af44f376fae SHA-256: 7832c17dfeb13b2f20d580bf62501dc937ba6caa2aa7cb000334d66c60e37280

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 0.9990

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://soxebez.ru/strik?utm_term=past+progressive+tense+exercises+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4379602/normal_5fe1122d7ebca.pdfIn PDF document text
- http://lorenbayi.com/all_types_of_poemsvx56x.pdfIn PDF document text
- http://phtech.site/78436475887x1llf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4472764/normal_5fe2278945163.pdfIn PDF document text
- https://cdn.sqhk.co/vaminika/heFderD/89298739659.pdfIn PDF document text
- https://cdn.sqhk.co/bijilixiger/GR6ASgf/kart_star_mod_apk_revdl.pdfIn PDF document text
- https://cdn.sqhk.co/bekutojeke/2ajdgje/zoferutetapak.pdfIn PDF document text
- http://elinekici.online/mogadojumifivotisuzalolo2tfqi.pdfIn PDF document text
- http://3-bureaureport.info/focus_daniel_goleman_resumen_por_capitulosjosfl.pdfIn PDF document text
- https://cdn.sqhk.co/vabalogu/ii9hhse/kefavedixalofek.pdfIn PDF document text
- http://foyou.store/91772135955a40sp.pdfIn PDF document text
- http://qrettalq.online/wezariwawavanatovexsyk6s.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486565/normal_5fe8fcf4a73dd.pdfIn PDF document text
- http://mosdendy.store/220089514265mx9e.pdfIn PDF document text
- http://dostafood.xyz/disoxuzedafufimilixu0vr8.pdfIn PDF document text
- http://shopmzm.site/24557252839ergi9.pdfIn PDF document text
- https://cdn.sqhk.co/tawibonikigo/gUxgihc/mejaduwigavujumeji.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4482018/normal_5fe1991873fb5.pdfIn PDF document text
- http://carbags.site/phool_bane_angaray_full_moviez6og9.pdfIn PDF document text
- http://prequester.online/dewigubopumotapulapoe1yev.pdfIn PDF document text
- http://leon-stavki.info/liburajivjpn3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484399/normal_5fcf46ffe1d50.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://0e75ab8e-f6a1-4360-bef2-1d94e06fde4e.filesusr.com/ugd/c0518c_f0512fb362024d1bad9559d6c8c7aca9.pdf?index=trueIn PDF document text
- https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_afc3b014f451400fa4498f5351940834.pdf?index=trueIn PDF document text
- https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_43cf35f6f0c6473e9abe1be29ae57ea2.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e94d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE94D	5208 bytes
SHA-256: `c23978fab2180bcaeed602114112e454827dc0ca5d03765571b2e6ed7de86283`
`font_01_sfnt_off0000fb1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB1A	10788 bytes
SHA-256: `08cc7825d8614d6046dc0273f4503adab981e17c21ce11ee819f036e08d66f78`
`font_02_sfnt_off00012037.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12037	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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