PDF malware analysis — malicious · 7299d2cb644e74c5

MALICIOUS

PDF

76.2 KB Created: 2021-03-09 11:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 01871713bc4d67ae30dd4e09c7e310ee SHA-1: d3b33e29d775445fc3885ba91bcab94f7900e3da SHA-256: 7299d2cb644e74c5a4ab867e78332edfb3cd5ce2a4ce49c075c730a702ea9fd7

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO spamming operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. The embedded URLs are the primary indicators of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.8610

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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
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://fokemale.ru/award?keyword=article+about+music+pdf PDF link annotation
- https://jipuziloki.weebly.com/uploads/1/3/2/6/132695969/38b79122cd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386094/normal_5fd08f8538bf8.pdfIn PDF document text
- https://cdn.sqhk.co/juvokapo/bhjvgcR/barcode_scanner_app_free_iphone.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4377925/normal_5ff519bc89ee9.pdfIn PDF document text
- https://nojefawagalubab.weebly.com/uploads/1/3/4/2/134266261/foniwaxit.pdfIn PDF document text
- http://juwupexutaval.mywebcommunity.org/55076659570.pdfIn PDF document text
- https://cdn.sqhk.co/pirasemofoge/gichakJ/free_crunchyroll_premium_codes_2019.pdfIn PDF document text
- https://fasiwuwazaxeba.weebly.com/uploads/1/3/1/4/131438460/712468.pdfIn PDF document text
- https://cdn.sqhk.co/nupozifulija/fhi4meS/56084416528.pdfIn PDF document text
- http://redirerer.medianewsonline.com/12240573741.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386079/normal_601876499c0a3.pdfIn PDF document text
- https://cdn.sqhk.co/valujoper/KQgjwid/tv_lg_50_4k_120hz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471085/normal_60470149b0eab.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/47899f48-ed70-4334-9090-cb20f52ac079/where_do_i_oil_my_kenmore_sewing_machine.pdfIn PDF document text
- https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_c0cf0ea1325349819219772e8bb53168.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/e8a73aca-c6a4-473d-81a5-28ef5536a9eb/pironowujase.pdfIn PDF document text
- https://8d684a1e-4078-49cd-b336-05adf09473b6.filesusr.com/ugd/2b25e8_5a14d882cd6a43469c47d5bf07024006.pdf?index=trueIn PDF document text
- https://a1d3e036-d9a1-4be1-9d2f-eedbb581cb22.filesusr.com/ugd/3ce946_03911e22b56a4d169ed653b1e51da093.pdf?index=trueIn PDF document text
- https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_3f297f5293054a209a9287f8196f965c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/85179444-9c62-419b-9840-e393c5a89be2/nubazogozanofamiva.pdfIn PDF document text
- https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_9efce5239f994159ac9819c5339becdd.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/cd035b9f-e2cb-4442-97d7-f5be1e605f9f/25670384617.pdfIn 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_off0000fc6e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC6E	5432 bytes
SHA-256: `3fe57b8a2fa212b80bbd76cc02f0cfe2e49d1d41b857f68f003da019c6b4a308`
`font_01_sfnt_off00010ec7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EC7	10848 bytes
SHA-256: `db59acc5b8ea27e8b8d28737d2e823e26c00622b007ef65dea898aeebd5c86ab`

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