PDF malware analysis — malicious · 46de9b0e2b4df298

MALICIOUS

PDF

89.2 KB Created: 2021-07-16 14:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 5c08696d1459ab192036e9a67e4a72b5 SHA-1: 47692ce71b5e9706a3530b4f38e51bc5f3c71b2b SHA-256: 46de9b0e2b4df298969bd500fa79c3d2264635c0ba90896a25a4a4cd60d8bc7a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, directing users to numerous external URLs hosted on compromised CMS platforms. The primary purpose appears to be to distribute malicious content or conduct phishing attacks through these numerous links.

Machine Learning

Nyx PDF Classifier malicious score 0.9822

Heuristics 6

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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6029271aa---wamanotabuf.pdf In PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbe232e774---muritakazu.pdfIn PDF document text
- http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20747399970.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd95b92264---fotajabojege.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b30a65211bc---7557974336.pdfIn PDF document text
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/05f07dff0fec835567e03284cf796f32/83119728482.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16093f2d297cd7---54736058790.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f6ad649e130b9f82738ffc43ecaf802a/tukofigexilibap.pdfIn PDF document text
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/44460bd736a1ec9700e724ee2b7a6b10/wutexozeduz.pdfIn PDF document text
- https://securitydm.rs/slicice/file/65877113891.pdfIn PDF document text
- https://pasarantogel2.com/contents//files/selusorukejanetevi.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b39aba87559---52136406015.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/3bfifl1pj6ab7cbs3947op65t4/93022130752.pdfIn PDF document text
- https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/add34b63add9affcc8ef9844d61e7b9a/fozofujolokizakivuweb.pdfIn PDF document text
- http://quangcaosms.org/media/ftp/file/foxogedoxesarosabelawo.pdfIn PDF document text
- http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16085a64c3dd12---xenosu.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ikgblrsrua5qu8lbo0vt76f2u7/9697412936.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/753997a609ce753511a52c503493f40e/73467247651.pdfIn PDF document text
- http://alimentosldm.com/userfiles/file/3776925035.pdfIn PDF document text
- https://wita.lt/images/files/14387082752.pdfIn PDF document text
- https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/325bcfa338adf3270fbe06ae02d431e1/33555342267.pdfIn PDF document text
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/9278d7f1fcbcb64739c57dcf053310e3/feguninuz.pdfIn PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/12f8ba49d290b8f2308a75ff1aeb9bb9/30976886081.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/24c11a93f2eaee59872ea1bf01bcd141/sawogavos.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e3cea6f91---23377006964.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d789b90afb---2565012478.pdfIn PDF document text
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/vk5rg4ul40rcpji4mdlcnb2gbs/84211850947.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=wyoming+property+tax+calculatorPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- 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_off0000f9b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9B0	10860 bytes
SHA-256: `170b9f57fa94fd0cb46dc05c7f139012427963c3cb9c6b70106b73d7e8f0ae4b`
`font_01_sfnt_off000112c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112C6	17088 bytes
SHA-256: `5f12295cb4a7609e84527a901c0177b7d3904ef7ecd183019bcd8c756e9340e7`
`font_02_sfnt_off00013f76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F76	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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