PDF malware analysis — malicious · d6ea260a526e2f9b

MALICIOUS

PDF

76.8 KB Created: 2021-05-22 00:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: fe7566e6694697179f0ba866cc4530cf SHA-1: 9385ee78a046408b23530f7bd1de2f1b457ad7d4 SHA-256: d6ea260a526e2f9b8a4c2c45f3c4979033f2bdfc62be66220d14159ab257bac2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a link farm and an embedded URI pointing to a suspicious domain, suggesting a phishing or scam lure. The document body, though heavily obfuscated, contains text related to 'buscarv con coincidir excel' and the authoring application 'wkhtmltopdf', indicating it's likely designed to mimic search results or a document related to Excel. No scripts were extracted, but the presence of multiple external links and the ML classification strongly suggest malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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.
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/strik?utm_term=buscarv+con+coincidir+excel PDF link annotation
- https://ruxunomitebapat.weebly.com/uploads/1/3/1/6/131606858/wojita-sowaduses.pdfIn PDF document text
- https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/talebutugajo-vufofenosomele-fapal.pdfIn PDF document text
- https://dobabolomibela.weebly.com/uploads/1/3/2/6/132681713/4394515.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378620/normal_605f5635d2b23.pdfIn PDF document text
- https://felixitu.weebly.com/uploads/1/3/4/0/134012625/ad759f233.pdfIn PDF document text
- https://nevipezuke.weebly.com/uploads/1/3/4/6/134652321/2e677.pdfIn PDF document text
- https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/ximenepami_zogakasuporulu.pdfIn PDF document text
- https://zoroxazug.weebly.com/uploads/1/3/4/6/134614170/8390443.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371523/normal_5fd6770c6aa77.pdfIn PDF document text
- https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/vusurejuzu-kijufekakotedot.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483072/normal_602ae73ae4714.pdfIn PDF document text
- https://viramerobudob.weebly.com/uploads/1/3/1/4/131483281/butozisiza.pdfIn PDF document text
- https://basivuto.weebly.com/uploads/1/3/4/6/134646412/c5b7f1f4e9801a.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/jemisajoda/plantronics_voyager_3200_bluetooth_headset_grey.pdfIn PDF document text
- https://s3.amazonaws.com/xeropizuwe/wufevufagapubozomedisa.pdfIn PDF document text
- https://s3.amazonaws.com/waxegatulo/error_code_003_navien.pdfIn PDF document text
- https://s3.amazonaws.com/patotale/download_kjv_bible_trivia_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/rerinago/20111218633.pdfIn PDF document text
- https://s3.amazonaws.com/xirixepo/whatsapp_status_love_video_new.pdfIn PDF document text
- https://s3.amazonaws.com/xazarujokemus/xawitinozalobusitulid.pdfIn PDF document text
- https://s3.amazonaws.com/luropiw/the_holographic_universe_michael_talbot_review.pdfIn PDF document text
- https://s3.amazonaws.com/kefiperizonofu/how_profitable_is_forex_trading_in_kenya.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_off0000eb2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB2D	5112 bytes
SHA-256: `97b1f3d42df2e1b21bf9c7701729ca0129165f879a4453e5924813eb889ced90`
`font_01_sfnt_off0000fca9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCA9	12192 bytes
SHA-256: `b9c9b47a126088c02817f9584e22b5c8561c51b487735fb2e613429ffbdb29bb`

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