PDF malware analysis — malicious · b1666f8ebad10a37

MALICIOUS

PDF

134.7 KB Created: 2021-07-29 23:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 4ec79887ece8bf59356b092dae8e6e16 SHA-1: 17d1d9ed5a2477a3cfca3165b7587a134fd53ec4 SHA-256: b1666f8ebad10a37e74acc44d5cacb33f150398f1ab79d262722d7180f3bb662

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file is identified as a phishing trojan by ClamAV. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS upload storage. The primary purpose appears to be directing users to external, potentially malicious, content.

Machine Learning

Nyx PDF Classifier suspicious score 0.4212

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 https://pet-fashion.ro/mm/file/bagedekonebabut.pdf In PDF document text
- http://goldnumber.info/userfiles/file/76417346914.pdfIn PDF document text
- http://czechdidgeridoo.com/admin/upload/file/53557178145.pdfIn PDF document text
- https://www.sesc-am.com.br/Selecao/ckfinder/files/33460584119.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/c70c3457015c3989a730235d1d80282c/62798841766.pdfIn PDF document text
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/54c3a6vfmvg1j1afrta68p5rhb/zikomegasaj.pdfIn PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160755e8fa940f---54100966361.pdfIn PDF document text
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2d975b529---kofidoxakoweja.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a09e7c42d6---rujibopozaxakibejuve.pdfIn PDF document text
- http://teakdeck.pl/files/file/7277037610.pdfIn PDF document text
- http://ainut.fi/userfiles/file/xirujawigegujiwemaguk.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f50186b84---20428657405.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/693714429031dd5a332023ae48283e51/92962725462.pdfIn PDF document text
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/55037b463b2abc3191fbf33af8236ef1/mofaletipimakume.pdfIn PDF document text
- https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/0f85e1c1827ae6237cf5274a451d8187/17297999565.pdfIn PDF document text
- http://coiffurenais.com/userfiles/file/58566679262.pdfIn PDF document text
- http://reutlinger.pl/userfiles/file/tawepuguwovu.pdfIn PDF document text
- http://bocghebinhduong.com/media/ftp/file/44511740500.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f76d0494be---tunafogilemunarelubomemu.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b38c8b0f1---50984905909.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/6aac1fb14709f2a164445241aba615d4/fupitubibibozikez.pdfIn PDF document text
- http://doyen.cc/images/upload/File/88873597567.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b22417cad0c---45141468322.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=metodologia+de+investigacion+cualitativa+ejemplosPDF 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_off0001c39e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C39E	18768 bytes
SHA-256: `bfd0c464477393138f368752d863c82ae8164648bbd24855d781d409c57473b8`
`font_01_sfnt_off0001f377.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1F377	11044 bytes
SHA-256: `3c0f32abe964262876ba1c5c09e9ce2d9442b21b24a5b0c21742d31f661cac78`

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