PDF malware analysis — malicious · 0850dddde7fea7ca

MALICIOUS

PDF

83.2 KB Created: 2021-09-07 15:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 699ecfcad01e0b49528ca8085025648e SHA-1: 7ff08c5b347245478af2c5837e59d7aeeee5c72f SHA-256: 0850dddde7fea7ca2fdc527196594c8a2ac1d6b308763b3cfad12c9376839cb3

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to host malicious files. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malicious intent. The presence of embedded URLs and the structure of the PDF indicate it's part of a phishing campaign, likely aiming to trick users into downloading further malware.

Machine Learning

Nyx PDF Classifier suspicious score 0.4855

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://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/ee0ba7aa4d59541cb3385d9d4a99cb67/59496172460.pdf In PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072cec916a7d---95751403366.pdfIn PDF document text
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607596ffab291---pisomuvobizuwuwizos.pdfIn PDF document text
- http://tragiaocolamsapa.com/userfiles/image/file/karukipewetaxosivelaso.pdfIn PDF document text
- http://scard.vn/app/webroot/uploads/files/nosaximibezosuva.pdfIn PDF document text
- http://kevinmcallisterlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pobatuvol.pdfIn PDF document text
- http://augsburger-dartliga.de/uploads/file/xexiwowuforekaredurulab.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607009c746693---gugugawiwete.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/f7c1e28e323a36f2ff0e5b741a88a614/36518002804.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d096f5203a---80829151266.pdfIn PDF document text
- http://loveperfectionschool.com/upload/file/2780846648.pdfIn PDF document text
- https://tantecoccole016.it/file/pabeligig.pdfIn PDF document text
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4007be302---89725457057.pdfIn PDF document text
- http://dominoliberec.eu/images/file/files/demizuvegudeluzozo.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a21b2754f1d---vojafukina.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a397098d2e5---lupisejazagupejedazofe.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/11817573273.pdfIn PDF document text
- http://tokstar.com/_UploadFile/Images/file/jaweze.pdfIn PDF document text
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/8eb9041d299017271906322ad4ae9d39/puzurutewesegugapin.pdfIn PDF document text
- http://anandtouristcorporation.com/uploads/wizanenake.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608baac65df67---zisafukulimavudowe.pdfIn PDF document text
- https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/f3368f7f27184b5ed50c8e7c36bf897d/96424367.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160948febd61e5---69624903129.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=banking+sector+in+bangladesh+2017+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_off00010356.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10356	18436 bytes
SHA-256: `bf05f70a5a733919df82a08a4a54ef083e817189ae821880af578dd56025ef30`
`font_01_sfnt_off000132e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x132E3	11528 bytes
SHA-256: `5ad0ad25eff88ae6a74be511dde8138467444d27f4e259883ae2ed64ede4e890`

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