PDF malware analysis — malicious · 5e0ee6e7cba7f3c2

MALICIOUS

PDF

80.0 KB Created: 2021-10-07 04:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 0001d768e020a567be8de007690d92f3 SHA-1: 67cf455a9101e1f174cd6d080b07f07ff5428c19 SHA-256: 5e0ee6e7cba7f3c2ea78e83bb66c9ea3c6582afbe979d2835695dd4c23440366

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. The presence of numerous external URLs, many of which are linked to disposable hosting and appear to be part of a link farm, indicates a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection or download of malicious payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9949

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://crysiq.ru/uplcv?utm_term=download+video+from+any+website+online+free PDF link annotation
- http://cgpreceptor.com/ckfinder/userfiles/files/megibixazixukobi.pdfIn PDF document text
- http://dentalclinicbangalore.com/uploads/womunagajagikesofirazal.pdfIn PDF document text
- https://bruceleevideos.org/images/file/47319404171.pdfIn PDF document text
- http://savytrading.com/userfiles/file/70295010857.pdfIn PDF document text
- http://autoroman-service.ro/imagini_ws/ginetexitobezipubu.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/rawaxejowezinagemorowi.pdfIn PDF document text
- http://mueblesdepladur.es/1/userfiles/file/56907012226.pdfIn PDF document text
- https://castilloexterior.es/ckfinder/userfiles/files/57731896448.pdfIn PDF document text
- https://es88.tw/pro_pic/files/pizimomifaka.pdfIn PDF document text
- http://tachikawa-derma.biz/ckfinder/userfiles/files/37776863046.pdfIn PDF document text
- https://dichvumoinoi.com/ckfinder/userfiles/files/xojamowiwixefukib.pdfIn PDF document text
- https://nikoljski.com/ckfinder/userfiles/files/60164192323.pdfIn PDF document text
- http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/36175259067.pdfIn PDF document text
- http://maremio.ru/admin/ckfinder/userfiles/files/84435500458.pdfIn PDF document text
- http://proximeo.com/ckfinder/userfiles/files/83152660697.pdfIn PDF document text
- http://pradakshinam.com/fck_uploads/file/pubefesak.pdfIn PDF document text
- http://goodtraefarm.com/ckupload/files/21811907041.pdfIn PDF document text
- https://intersensor.ro/v2011/Files/fck_upload/file/zevetutebuxolosirivugizoj.pdfIn PDF document text
- http://creaorganization.com/depo/sayfaresim/file/xevijoretomale.pdfIn PDF document text
- http://anapharmata.hu/ckfinder/core/connector/php/files/18079054354.pdfIn PDF document text
- http://albertf.madteam.net/ckfinder/userfiles/files/sadezonizilonavazi.pdfIn PDF document text
- https://samajsutra.com/userfiles/files/xedevusixoxexakube.pdfIn PDF document text
- http://castel.lu/userfiles/files/kiwuf.pdfIn PDF document text
- https://www.khaosanpools.org/ckfinder/userfiles/files/61673302338.pdfIn PDF document text
- https://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/xewovovazasipejamobazedep.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d21f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD21F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ea31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA31	18104 bytes
SHA-256: `1d6f3857de36a63679a74c201a1a4ed3d5afc9a3026f476db7c78075df3f9863`
`font_02_sfnt_off000118fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118FA	10920 bytes
SHA-256: `1ac41e4ae9710e5e55104c360596a887ae704c259c15140c074e15a3d5a6f55f`

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