PDF malware analysis — malicious · 59e66f3383a9c301

MALICIOUS

PDF

75.1 KB Created: 2021-09-12 18:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: c4ba23051e4b16971b6850e4ac7c498f SHA-1: 2dbbc6c15d32806874ca160c1f25b3a5e4e9d40d SHA-256: 59e66f3383a9c301dd2d16dd23421cdbc947f94c4db1ba32b1dec6e2453b46bb

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs pointing to disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags the document as a link farm on disposable hosting, reinforcing the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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://catamma.ru/uplcv?utm_term=p2p+ip+camera+setup+android PDF link annotation
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/ff2d5ae405e15fdff1ebe9eb7dc94e9c/silanamutufixizebajilifu.pdfIn PDF document text
- http://savytrading.com/userfiles/file/9277548872.pdfIn PDF document text
- http://diversecityuk.com/userfiles/file/mosavewujomiw.pdfIn PDF document text
- https://seedcambodia.org/htdocs/cljr/data/files/zekedowodoponifawesinebab.pdfIn PDF document text
- http://generaldistco.com/images/file/tejabiderawupamexiva.pdfIn PDF document text
- https://irepairplus.nl/app/webroot/files/userfiles/files/29946150295.pdfIn PDF document text
- https://media-get.ru/userfiles/files/19229227953.pdfIn PDF document text
- http://klientskazona.radeton.sk/ckfinder/userfiles/files/mafokakibaf.pdfIn PDF document text
- https://pensionradvanice.cz/res/file/635467997.pdfIn PDF document text
- http://dison.cn/filespath/files/20210910221728.pdfIn PDF document text
- http://adams-gold.ru/archive/image/file/jupabinovetuleramepuguxi.pdfIn PDF document text
- http://coeb.eu/userfiles/files/69730960867.pdfIn PDF document text
- http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20978050579.pdfIn PDF document text
- http://shtaket46.ru/page_edit/_samples/userfiles/files/70210910010.pdfIn PDF document text
- http://tko.wavedev.net/img/files/files/wogafejuzolazixo.pdfIn PDF document text
- http://csc0516.com/userfiles/file/20210910053625_fogwlh.pdfIn PDF document text
- http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/84116529928.pdfIn PDF document text
- https://webvitamin.vn/app/webroot/uploads/files/dinelolagofefuti.pdfIn PDF document text
- http://proreferee.ru/uploads/ckfinder/files/53157901775.pdfIn PDF document text
- http://eco-versute.com/app/webroot/ckfinder/userfiles/files/68700438201.pdfIn PDF document text
- http://intimatehotelpattaya.com/image/upload/File/75009097069.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-09-03/images/files/22549411204.pdfIn PDF document text
- http://madurastones.com/userfiles/file/jogut.pdfIn PDF document text
- https://777mto.com/contents/files/28927852967.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/55698558696.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_off0000bf38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF38	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000d74a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD74A	17284 bytes
SHA-256: `7651394ec92ffedc8fa9c8401c052862b2321467b4b9320c2406f017e91415df`
`font_02_sfnt_off0001044c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1044C	10848 bytes
SHA-256: `d0855f8e280220e8e62aa3a58a22d2003652be30d0810381735ebe22b47f7921`

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