PDF malware analysis — malicious · bc0b759d13b052ce

MALICIOUS

PDF

70.6 KB Created: 2021-09-08 13:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01

MD5: e42f0590284889022f934d80c8910414 SHA-1: a1dbc27cd4950c229e5723d5a268a9eca323543c SHA-256: bc0b759d13b052ceb4a8457aca4a4c7982328e5a66d7e38fdb7e193d9718de5c

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8295

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://jobtiara.com/files/files/69727565871.pdf In PDF document text
- http://dragonspond.com/uploads/files/koteseva.pdfIn PDF document text
- https://stw-nowogard.pl/download/file/69302879361.pdfIn PDF document text
- https://euforbiabulgaria.com/uploads/pages/files/84253117943.pdfIn PDF document text
- http://technimexvn.com/images/ckeditor/files/zuwakametelikiwem.pdfIn PDF document text
- http://materialdeestudo.top/userfiles/files/rarezubobawolomuwilan.pdfIn PDF document text
- https://rireenfrance.com/images/upload/files/14911112813.pdfIn PDF document text
- https://tranhtreo.com/images/ckeditor/files/20930707373.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613444cd9dc07---12320107671.pdfIn PDF document text
- http://www.anclupnapoli.it/userfiles/file/63188197730.pdfIn PDF document text
- http://www.ags-sib.ru/ckfinder/userfiles/files/kaxalijonawolulowosugoniv.pdfIn PDF document text
- http://doubler-son-capital.com/photos/files/33425389585.pdfIn PDF document text
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/d904930bc722fb8be02934c53905f06e/29414603871.pdfIn PDF document text
- https://kop-trans.pl/uploads/userfiles/files/45960763158.pdfIn PDF document text
- https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/37502137335.pdfIn PDF document text
- https://telenovella-bg.com/files/39285155247.pdfIn PDF document text
- http://sziazsauto.com/uploads/files/36776866440.pdfIn PDF document text
- http://remont-m.com/userfiles/file/90256255532.pdfIn PDF document text
- http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/panavupideku.pdfIn PDF document text
- https://eletroluz-al.com/_IMG/img_internas/file/genodologabisamitugusudu.pdfIn PDF document text
- http://dobermanncz.eu/files/gugipimexumixoru.pdfIn PDF document text
- http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/raxapatilafufireluxasiluz.pdfIn PDF document text
- https://longhoang.vn/upload/files/41422397653.pdfIn PDF document text
- http://prosquash.by/data/87369589218.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=future+perfect+simple+and+future+perfect+continuous+exercises+pdfPDF 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_off0000e0d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0D8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f8ef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8EF	10960 bytes
SHA-256: `d444f57e9afb192d903b3ce3ac20c09105f75222cfa5954066e00c1d661d9282`

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