PDF malware analysis — malicious · 07936a564b058538

MALICIOUS

PDF

70.6 KB Created: 2021-08-17 09:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: fd00e29609355b95b3358b5f26e9a3e1 SHA-1: 32c34127e94039a5472951b036db155f3a8c8906 SHA-256: 07936a564b058538ce2cdb69a4b26433521642be567fab5117eb85a5f19c6a4e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs likely serve as lures to external malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.7925

Heuristics 5

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
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://freehajjandumrah.com/admin/admin/uploadfiles/file/65400454023.pdf In PDF document text
- http://sh-ruiyangcpa.com/userfiles/file/2021-7///2021728122463489.pdfIn PDF document text
- http://orsolyajuhasz.com/ckfinder/userfiles/files/56878564310.pdfIn PDF document text
- https://xn--p3t29jo1ed4o4xw.tw/upload/files/56557480535.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607673e87f2e7---lewipegivubavebafabegig.pdfIn PDF document text
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ac47e1354---sunubegusag.pdfIn PDF document text
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079372f517b5---lugedekuwop.pdfIn PDF document text
- https://hitpoint.tw/userfiles/file/diveziloxaxofolepuwisuwur.pdfIn PDF document text
- http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b3015ad72---99254695710.pdfIn PDF document text
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc22edfa9c---bukaxofipudukuridutexabux.pdfIn PDF document text
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/ca6f2f2b25084731a42c452c1200d613/digesejiletibi.pdfIn PDF document text
- https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/vm2igf9jnad3ulvuf6r9j8rnk0/92064781389.pdfIn PDF document text
- https://gagiongvitgiong.com/ckfinder/userfiles/files/wumunopupemedakabusodive.pdfIn PDF document text
- http://keysrotary.com/clients/d/da/da683cbc30bfd632b0b364d14bdd38fd/File/didededipolazokuwafel.pdfIn PDF document text
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/mf1a92asi4p1strl3ogo25hrg6/71929778475.pdfIn PDF document text
- http://ohappy.org/userData/board/file/dotovezosapoga.pdfIn PDF document text
- http://atenngo.com/admin/sites/site/documents/14767602542.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/4485154140e3136ed2aa79f9581f582e/58935583544.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161076d3392819---gizaxapaxetekepemalo.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/8c73ef80e4ad437cbfabef8ec891ee20/28961561656.pdfIn PDF document text
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e7c363109---17891772517.pdfIn PDF document text
- http://architects-desk.com/uploadsfile/wedesodixagudexisipesamil.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=what+is+a+good+objective+for+a+teaching+resumePDF 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_off0000dc92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC92	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f4a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4A4	16528 bytes
SHA-256: `5b795e989d8f0901c7c612b7edd629828349ee4e577fd500af289406108765b1`

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