PDF malware analysis — malicious · 95b7bf83ac1a6ed6

MALICIOUS

PDF

78.0 KB Created: 2021-07-17 07:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 1b495e1c2434ba03599d2fa18756a33e SHA-1: feac56cdefbdc3c5aa7d27bda60a412915f1b2fc SHA-256: 95b7bf83ac1a6ed65ea44242f23d0265261f247e7c5a9d6e055b6fe48cc2c755

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier suspicious score 0.4580

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160734d7a507aa---59098683164.pdf In PDF document text
- http://elskenecologie.nl/files/xebimakevesiwa.pdfIn PDF document text
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609da92316b66---99954699028.pdfIn PDF document text
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/2u3nr4p95h2n6u8vr154qko018/5096053101.pdfIn PDF document text
- https://wagaskar.com/media/70722848634.pdfIn PDF document text
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823d387e8d8---42566973291.pdfIn PDF document text
- https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/829bc2e96692b35537b10f9d8375fb2e/22553921759.pdfIn PDF document text
- https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16088399bcbc5f---97316995352.pdfIn PDF document text
- https://estoniapools.com/contents//files/nemugodaxudubofune.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f9da9aca6---jesiladofupofofipixulit.pdfIn PDF document text
- http://cosmic-kino.ru/sadm_files/pesapuvididi.pdfIn PDF document text
- http://signauction.net/userfiles/file/46934326823.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16074cfbdca3d3---70058902023.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607781b584017---74263125318.pdfIn PDF document text
- http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tazovovetodur.pdfIn PDF document text
- http://werder-ritter.de/UserFiles/File/minefuze.pdfIn PDF document text
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/8h0ssq96qco2om4m0ra9be68fn/11323405568.pdfIn PDF document text
- http://banglatalkies.com/dynamic-images/cms/file/40888107810.pdfIn PDF document text
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/2f1f0292f785adbf93472c34b841b57c/66578323036.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/k41ernhtf3fau76gj3rl4ra6n9/91558393659.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b55b077b955---xikenedi.pdfIn PDF document text
- https://mimpishio2.net/contents//files/padivatanabevejumijaf.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9365d8f392---616797573.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f8c23df95---13417711479.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=unprotect+sheet+vba+without+passwordPDF 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_off0000e76a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE76A	10964 bytes
SHA-256: `c7aa56efa7903c5e8a7f72930244cadd50aefff0f817ecf40d9670a7d1de8706`
`font_01_sfnt_off000100a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100A5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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