PDF malware analysis — malicious · 8f2b0ddc078ca0c2

MALICIOUS

PDF

88.5 KB Created: 2021-09-09 05:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02

MD5: 760fd2e6837008e75b450ff7b515f3c0 SHA-1: 743102ca4c80c4a6c4e7356f36945cd0037efe5d SHA-256: 8f2b0ddc078ca0c247949b74a127035ed99e37f4b3fdce7ae3120a17b520ec4c

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a seed-phrase/secret-recovery lure. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9945

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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://cli-kh.com/uploads/files/202109010603509842.pdf In PDF document text
- http://c2r-auto.com/uploadfiles/file/2021090903471173499.pdfIn PDF document text
- http://malopolskiszlakwinny.pl/upload/File/84355544031.pdfIn PDF document text
- http://jowinbio.com/upload/files/202109012245556051.pdfIn PDF document text
- http://bonfiremadigan.com/uploads/fckeditor/file/tekidevujafidas.pdfIn PDF document text
- http://www.multigacos.com/admin/uploaded/fck/file/paxewaka.pdfIn PDF document text
- https://ahha.az/userfiles/file/tedavikunagepapunux.pdfIn PDF document text
- https://wineuniverse.us/userfiles/file/dizowakozikufizodata.pdfIn PDF document text
- https://szalkasszorutacskok.hu/app/webroot/files/content/files/36679188252.pdfIn PDF document text
- http://fst-uinsu.net/userfiles/files/41567589362.pdfIn PDF document text
- http://toyotarent.hk/FileData/ckfinder/files/20210904_3E5D62DD9F4FF8D2.pdfIn PDF document text
- https://satbietthu.com/luutru/files/jisogixonipuveruxenu.pdfIn PDF document text
- http://tiszaladany.hu/upload/file/17194734493.pdfIn PDF document text
- http://monkey-do.net/userfiles/file/dejeruradirixejupab.pdfIn PDF document text
- https://chinatupai.com/web/js/ckfinder/userfiles/files/83086476951.pdfIn PDF document text
- https://kapokcmassage.com/uploads/files/202109020305271042.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0bc63ad11---tenol.pdfIn PDF document text
- https://eghamatsafar.ir/basefile/eghamatsafar/files/fopowedatus.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/f1ccaf2da513bc6ca055f5fef1d2c299/48253885189.pdfIn PDF document text
- http://www.synagoge-stommeln.de/ckfinder/userfiles/files/bevumu.pdfIn PDF document text
- https://gastrotest.co/ckfinder/userfiles/files/38279438837.pdfIn PDF document text
- http://elsped.hu/files/file/35515583901.pdfIn PDF document text
- https://fivetc.net/uploads/files/35627796123.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=webview+implementation+disabled+for+userPDF link annotation
- 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_off0000f3e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3E4	11044 bytes
SHA-256: `218b004205a3aadc2e6149d09179984b31e15e31b43441a4e66ad354e66f0537`
`font_01_sfnt_off00010d62.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D62	18084 bytes
SHA-256: `d4cbedd0ac51bc63f876241f9d466713b790f267d9e177d4803896b6ebb0ed1c`
`font_02_sfnt_off00013c86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13C86	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.