PDF malware analysis — malicious · d38369ffbe364de3

MALICIOUS

PDF

77.6 KB Created: 2021-09-13 01:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: a9690bd6a15622c3e2c8b9acb3a91d9e SHA-1: 567f6f3982598bec6ed17bf4850536c6cf045456 SHA-256: d38369ffbe364de31cba93bd38ab5eb356382d627a9ac2fe9e39068d89d0c2ec

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The critical ClamAV heuristic identified this PDF as a phishing trojan. The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to obscure the ultimate destination. While no scripts were directly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier suspicious score 0.4398

Heuristics 4

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.
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 http://bk-plus.at/userfiles/files/82992044104.pdf In PDF document text
- http://instant-image.net/UserFiles/Site/File/bibusoguxepu.pdfIn PDF document text
- http://siciny.pl/userfiles/file/pagaxabevu.pdfIn PDF document text
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613503fc7e5e1---95310107547.pdfIn PDF document text
- https://kaimano.it/file/roropovuxazotajokulu.pdfIn PDF document text
- https://anakmeong.com/contents/files/zogitugen.pdfIn PDF document text
- http://falconartistmanagement.com/ckfinder/userfiles/files/72619945055.pdfIn PDF document text
- https://repetitorebi.ge/userfiles/files/95975964873.pdfIn PDF document text
- http://suliaok.com/v15/Upload/file/202196938308388.pdfIn PDF document text
- http://zssadkowice.pl/pliki/bebobavozoxuvo.pdfIn PDF document text
- http://barcabianca.eu/upload/file/boriporejigagujetozevimak.pdfIn PDF document text
- http://dieutrimun.myphamkangnam.vn/webroot/img/files/kobizujepuzamifu.pdfIn PDF document text
- https://nyig.com/files/file/75326816134.pdfIn PDF document text
- http://duocmyphamcongty.com/app/webroot/uploads/files/64230475786.pdfIn PDF document text
- http://highgaincomposites.com/img/file/2021981450.pdfIn PDF document text
- https://harom.ro/files/file/26255360190.pdfIn PDF document text
- http://puginternational.com/ckfinder/userfiles/files/74056306106.pdfIn PDF document text
- http://lrm.mcdonalds.ua/ckfinder/userfiles/files/biwajevumetowewaxobe.pdfIn PDF document text
- http://tumwebthailand.com/ckfinder/userfiles/files/65402590981.pdfIn PDF document text
- https://www.bevillelecomte.ovh/ckfinder/userfiles/files/35985414905.pdfIn PDF document text
- http://miskolciharsona.hu/pictures/file/gadoweneravarogagazetimun.pdfIn PDF document text
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130f2f40cfcd---vixukodesebolapegerijamo.pdfIn PDF document text
- http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/situdemabajavugitojiniseg.pdfIn PDF document text
- http://regmac.net/userfiles/files/nolije.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=hotspot+proxy+downloadPDF link annotation
- 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_off0000d7c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7C8	16632 bytes
SHA-256: `e896d0c9c6509c93731645541c0836c845742b74f7fde2e8ff5e94baacc6a6a0`
`font_01_sfnt_off0000ef59.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF59	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010770.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10770	10452 bytes
SHA-256: `f5d566adbf39d571bbcd76710a64c4270c19c58ff1b472625c6e265dcc518a13`

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