PDF malware analysis — malicious · 085d39e62dacd65f

MALICIOUS

PDF

86.2 KB Created: 2021-09-02 04:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 6c9bf7ef596cc3455b68115281f35c09 SHA-1: c02d02297f793c98ff28b4e9c8c990a69c698170 SHA-256: 085d39e62dacd65ffc143e5eb912ea4c78b7fbea77866c60353489a6a4d1d0fa

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it with high confidence. It contains numerous links pointing to compromised websites, indicating a phishing or malware distribution attempt. The PDF itself does not contain readable content, but the heuristics suggest it functions as a link farm to potentially malicious or compromised domains.

Machine Learning

Nyx PDF Classifier malicious score 0.9270

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/lezizesuzuxipisu.pdf In PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/af2021898e7a71589dd1d2703a597bd3/1906607350.pdfIn PDF document text
- http://ggmtc.net/userfiles/files/58791592051.pdfIn PDF document text
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611aac9182990---numafibotesizupano.pdfIn PDF document text
- https://candbco.com/ckfinder/userfiles/files/64788530851.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/qdpff4gglfvhbjom6nvhjhbsl5/89759188430.pdfIn PDF document text
- https://bank-kredit.at/ckfinder/userfiles/files/84634953159.pdfIn PDF document text
- https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/v42b85u58tm40pgh25nqv94pl8/lirapag.pdfIn PDF document text
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a03cf5c5d60---71870815805.pdfIn PDF document text
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b92f32db3---41984122159.pdfIn PDF document text
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160920d03a03e1---razuzuvizurarowo.pdfIn PDF document text
- https://lederstuhlshop.de/ckfinder/userfiles/files/37929140483.pdfIn PDF document text
- https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160befb6bbc759---lufidepoxagiju.pdfIn PDF document text
- http://anandamsanyal.com/userfiles/file/fakuwalisusapilufuresawub.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5a0662a2e3---32425158753.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/5b992luk849nha6u9jl86lclh3/parupokala.pdfIn PDF document text
- https://tapuionoticias.com/ckfinder/files/7396119826.pdfIn PDF document text
- https://bluza-shop.ru/content/File/75748090283.pdfIn PDF document text
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607d20da3d172---31773429763.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/e7fe1c3d5f93cd59e5dd473ca43a84e0/fakagobiz.pdfIn PDF document text
- https://transmar.biz/ckfinder/userfiles/files/27258118824.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+text+a+girl+you+like+examples+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_off0000febf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEBF	18976 bytes
SHA-256: `cff107a84bc8c356a2347300f334ec62251c6c013ac788da169392dfa3a80c69`
`font_01_sfnt_off00012fd0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12FD0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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