PDF malware analysis — malicious · 6e61ac1a05bca868

MALICIOUS

PDF

87.7 KB Created: 2021-08-02 18:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18

MD5: a29893f800134712c05c1c585a534739 SHA-1: 2c981720e851a900d59b481b51df4de995b2b9a7 SHA-256: 6e61ac1a05bca868e832a9d8d416ffb7c3e9ba3e6760e3ecef8d83770f25a815

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The document contains a link farm hosted on multiple websites, some of which appear to be compromised CMS uploads, suggesting an attempt to distribute further malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9957

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://highspiritsmusic.com/ckfinder/userfiles/files/31537028786.pdf In PDF document text
- https://rybczewice.pl/userfiles/file/9845236327.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69396197b7---35278190742.pdfIn PDF document text
- https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/411b214fe87cf374cc13d2cd14c8c1b4/37324787870.pdfIn PDF document text
- https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/8e8c0ed2b41804ecbcb7f1604a0c074e/63286932457.pdfIn PDF document text
- https://confetti-seasons.ru/upload/files/87542099572.pdfIn PDF document text
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/83a4679f349a310578dee3326387831e/30832746245.pdfIn PDF document text
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/3g17isvdp9h9ruf7lueihijir6/41799760445.pdfIn PDF document text
- https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/8bf50c72118fe857e70777baba8cf924/pigogujil.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/7c2ccc7c5c8ea904a7e50f9581860cab/webasujebizoxud.pdfIn PDF document text
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/f4a0ea88234604a009c16f9388490648/rafofone.pdfIn PDF document text
- http://dainichiji.com/upload_ckr/files/28464134870.pdfIn PDF document text
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee7d1e3351---fegefalojufomede.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8564b3939---temesukoxil.pdfIn PDF document text
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/k5qsqt3cqf7895g3vltctpq9rd/76635998099.pdfIn PDF document text
- http://nashcentralfalcon.com/clients/d/d5/d5bea9c86035def548a020f7371d19fe/File/47172284571.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/75frdoul9hb32vjb4omn35bnpj/11059567380.pdfIn PDF document text
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b848b7329c---72018029592.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec6ab0dc72---rupapakeborasuz.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160731c9a27602---48225491299.pdfIn PDF document text
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e875cad524d---wiwumaxupujarenorabaratu.pdfIn PDF document text
- https://gregor-biffiger.ch/userfiles/file/20927634684.pdfIn PDF document text
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f361c3b054---16108381751.pdfIn PDF document text
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b452238c379---65335808677.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/0ad72d27060da794f8eb336bbc2dff75/15075872748.pdfIn PDF document text
- http://banglatalkies.com/dynamic-images/cms/file/94001792302.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=today+malayala+manorama+newspaper+pdf+downloadPDF 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_off0000f2ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2AB	10632 bytes
SHA-256: `9dd81f97c0bf25a4fd20e566dbccc63dd3827ed4a020314e04d08cadf4ef9c6b`
`font_01_sfnt_off00010b07.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B07	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012319.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12319	17204 bytes
SHA-256: `82df4c55a161de65c8c54e5484a76ab9ddf3015d85813609b21923e706dbffbf`

Open this report in the interactive analyzer, or submit your own file for analysis.