PDF malware analysis — malicious · 7d0537d61a9da058

MALICIOUS

PDF

79.8 KB Created: 2021-09-11 01:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 0d99d8a12939f5c52677a3d6471f8a8d SHA-1: 83438a7f6ecd5fd041544063e025bbe02f6ee4d9 SHA-256: 7d0537d61a9da058477126468efb128ab62a052036594f83189a7d8c9c29859f

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The critical ClamAV heuristic indicates this PDF is a phishing trojan. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic confirms the document contains numerous links to distinct, disposable hosts, suggesting a link farm designed to distribute malicious content or phish users. While no scripts were extracted, the presence of multiple unknown URLs strongly suggests a malicious intent to redirect users to compromised or malicious sites.

Machine Learning

Nyx PDF Classifier suspicious score 0.4045

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 http://doanekeyes.com/userfiles/docs/11172994434.pdf In PDF document text
- http://www.elmundodelapiscina.com/ckfinder/userfiles/files/levugigis.pdfIn PDF document text
- http://cn-polylysine.com/d/files/fenutujudumegawufovuxuka.pdfIn PDF document text
- https://parvazyab.com/basefile/api203/files/kebupuw.pdfIn PDF document text
- https://g4m3s-4p1-12s1.com/contents/files/34134843253.pdfIn PDF document text
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e8f133464---79039658033.pdfIn PDF document text
- http://czechnews.cz/userfiles/files/nuwevamididebajebazupada.pdfIn PDF document text
- http://www.naraihillgolf.com/admin/userfiles/file/botogazomozivomajiliw.pdfIn PDF document text
- https://netcsemege.hu/ckfinder/userfiles/files/nugutixovepenori.pdfIn PDF document text
- http://aaronandanthony.com/userfiles/files/50042788918.pdfIn PDF document text
- http://manpukuorder.com/uploads/files/dilixefawalikurobid.pdfIn PDF document text
- http://queenart.kr/userData/board/file/kapobazegemikujejenum.pdfIn PDF document text
- https://hongdung.vn/ckeditor/images/files/62695576532.pdfIn PDF document text
- http://nocleginaplus.pl/uploads/userfiles/files/xavazawevelijaloxumajiw.pdfIn PDF document text
- http://riverside-plaza.com/upload/userfile/files/xipolowusanozulivu.pdfIn PDF document text
- https://satnamunicipalcorporation.com/admin/ckfinder/userfiles/files/86124056408.pdfIn PDF document text
- https://amatnieks.com/pictures/image/97533907509.pdfIn PDF document text
- http://spartapr.com/images/upload/file/sasikeraligudo.pdfIn PDF document text
- https://grandiosieventinuziali.it/filesUploads/file/timekazedizamuderinikeje.pdfIn PDF document text
- http://www.jobsincrete.gr/images/_user_na/file/fifipebub.pdfIn PDF document text
- https://speedwayinfo.hu/uploads/file/24891947811.pdfIn PDF document text
- http://www.ppk-kp3k.kkp.go.id/ver2/extra/ckfinder/core/connector/php/media/ckfinder/files/68539808823.pdfIn PDF document text
- http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/kojoxoti.pdfIn PDF document text
- http://rickgrisolia.com/userfiles/files/nabedo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=xiaomi+poco+m2+pro+vs+redmi+note+9+proPDF 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_off0000e09c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE09C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f8ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8AE	18188 bytes
SHA-256: `0ba854705df72cc7500cd856c66b73cbb6e3ac183342d50372ae8407b39a63d0`
`font_02_sfnt_off0001286b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1286B	10992 bytes
SHA-256: `3088172714648d3ab0ff0b26bd3c4fdae7c6bc10c491eb8ce45a6500205e4ea3`

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