PDF malware analysis — malicious · 5822afc05d00799f

MALICIOUS

PDF

62.5 KB Created: 2021-09-13 11:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 899a6459d5650bf808b50293e7b869ad SHA-1: eb9524a3c3a7fbe5bee25d4dd295769b438af95a SHA-256: 5822afc05d00799f20c05a8c4610dcd57c16c9a2654e55236cc408da0c53ce04

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The PDF structure and embedded content are consistent with attempts to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.5774

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 https://digireg.si/upload/rasepomofuzijinab.pdf In PDF document text
- https://laptoptranganh.com/data/dulieu/files/7396813348.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161300b5d2766b---ridelifidusop.pdfIn PDF document text
- http://soc-in.com/data/media/files/37617758035.pdfIn PDF document text
- https://songod.vn/uploads/image/files/34806992761.pdfIn PDF document text
- http://zopos.zohukum.com/ckfinder/userfiles/files/wutabejolitev.pdfIn PDF document text
- http://shoreluxurylimos.com/userfiles/files/benaposuduzorutozejifap.pdfIn PDF document text
- https://graveyards-fuj.ae/userfiles/files/97070639439.pdfIn PDF document text
- http://citty.org/images/uploads/file/gawomazabude.pdfIn PDF document text
- http://geerhannutpourreussir.be/docs/upload/files/balurigegizawebapu.pdfIn PDF document text
- http://twtipa.com/upfile/files/2021/09/04/210500177.pdfIn PDF document text
- https://oriontradecom.com/ckfinder/userfiles/files/fewuzo.pdfIn PDF document text
- http://cachnhietwin.com/luutru/files/81212781903.pdfIn PDF document text
- http://amoy-art.com/Upload/file/11601497606.pdfIn PDF document text
- http://polishingmarblefloor.it/userfiles/files/gojirewutixomor.pdfIn PDF document text
- http://packagingandfoodmachinary.com/userfiles/file/dimotatopu.pdfIn PDF document text
- http://tw-sincere.com/upfiles/editor/files/5625776348.pdfIn PDF document text
- http://perilatomsk.ru/ckfinder/userfiles/files/35212804630.pdfIn PDF document text
- https://virtrade.gr/userfiles_lybo/file/vowitemidapowebidewi.pdfIn PDF document text
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161395abebc3a3---61234960595.pdfIn PDF document text
- http://www.cafeinca.com/img/public/contenido/file/giwidamor.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=mario+bros+game+apkPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bccd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBCCD	10572 bytes
SHA-256: `5053766adf326304ed35acf710bbcca856fc9a4f1f41e56ee25a7171ed6f7348`
`font_01_sfnt_off0000d4c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4C9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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