PDF malware analysis — malicious · b6b570a5dd8ffd40

MALICIOUS

PDF

79.9 KB Created: 2021-05-22 13:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 1028cb26ce0c5ac3ba88c29af8738512 SHA-1: 258d0e5a13b1cb6b627415023ae1891283e87045 SHA-256: b6b570a5dd8ffd402b493440b2996e19b7e01c7d74e7d7b2fa5edca4d2ab8cb7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to unfolding a NordicTrack treadmill, which is highly suspicious given the file's malicious verdict and the presence of numerous external links. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, with one prominent example being a link farm hosted on weebly.com. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or redirecting users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9957

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://xezojetit.ru/strik?utm_term=how+to+unfold+my+nordictrack+treadmill PDF link annotation
- https://dasezakam.weebly.com/uploads/1/3/4/8/134883145/sijizil.pdfIn PDF document text
- https://zuxivojeduzudog.weebly.com/uploads/1/3/1/3/131381782/lepafagub_fawoxidojagi.pdfIn PDF document text
- https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/vizazarerutir-gudatezuparo.pdfIn PDF document text
- https://vewudati.weebly.com/uploads/1/3/0/8/130873955/ffcf80ae227.pdfIn PDF document text
- https://vizexetu.weebly.com/uploads/1/3/4/8/134864552/loxoxi.pdfIn PDF document text
- https://numuladak.weebly.com/uploads/1/3/4/6/134613837/7206389.pdfIn PDF document text
- https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/paguresevuwoxux.pdfIn PDF document text
- https://tubozabuzimez.weebly.com/uploads/1/3/4/8/134878922/zemutejutipe_wugowo_kepifujekuweluv.pdfIn PDF document text
- https://gesunewa.weebly.com/uploads/1/3/1/4/131438127/7f207509a.pdfIn PDF document text
- https://josudirojupa.weebly.com/uploads/1/3/4/7/134729494/1019721.pdfIn PDF document text
- https://zitifulopesere.weebly.com/uploads/1/3/4/7/134722705/gepanamewexekaz-xirekuzobog-jijoduvox-vewiruwafipi.pdfIn PDF document text
- https://dokegofixak.weebly.com/uploads/1/3/0/8/130873830/6e841d4223.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/woberiz/napuvovo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e85ba8f-45ed-47b2-bea1-a1e94266fe28/what_does_woe_mean_in_english.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd8fb26e-1ffa-4b93-81b6-e98042fc11f3/towumuwariduwox.pdfIn PDF document text
- https://s3.amazonaws.com/rekorewexidiwo/41450223980.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f49474e8-2404-4d1a-807e-b713d15fc18b/11285173713.pdfIn PDF document text
- https://s3.amazonaws.com/gajakelegeza/project_feasibility_study_template_excel.pdfIn PDF document text
- https://s3.amazonaws.com/taguxif/titidisotonagifepiz.pdfIn PDF document text
- https://s3.amazonaws.com/vobuturinivi/tezeroxij.pdfIn PDF document text
- https://s3.amazonaws.com/jijumupade/kitelezuze.pdfIn PDF document text
- https://s3.amazonaws.com/rodakarugupoko/86072051627.pdfIn PDF document text
- https://s3.amazonaws.com/panalipolifod/bad_boy_lawn_mowers_for_sale_near_me.pdfIn PDF document text
- https://s3.amazonaws.com/xopugup/buxakumufedapazawuwujoro.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69b2ceb1-b975-42d0-8117-d98546accc62/24999658330.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/808cb9ea-8b3e-40f8-8514-e5d7be0002f0/rosario_dela_coronilla_dela_divina_misericordia_cantado_completo.pdfIn PDF document text
- https://s3.amazonaws.com/sorogamat/zigujenuz.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_off0000f9b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9B3	5208 bytes
SHA-256: `77d6636a7916b31d570bc06b51a7fc9f5cc6b2f0884c9773107f959baaf85fd1`
`font_01_sfnt_off00010b6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B6A	10752 bytes
SHA-256: `9af661c07443cce7a6e8bba5d5ac88e76bd9c056bb2f804b15808aa144d4a3ab`

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