MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, suggesting it functions as a link farm. While no executable scripts were extracted, the structure and numerous external links point towards a phishing or malicious redirection scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://mu-rrrc.com/userfiles/file/51777632839.pdf In PDF document text
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c864fb8575---44065372907.pdfIn PDF document text
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/ba79886410d3baf2874228f6ab5f1311/biwer.pdfIn PDF document text
- http://srlamn.com/clients/0/00/00e84243199fd86ca7c15d66a0237eb0/File/84811561809.pdfIn PDF document text
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609495fdbbda2---30569283437.pdfIn PDF document text
- http://cartopack.be/Images/file/84158438592.pdfIn PDF document text
- http://www.horakgolf.cz/ckfinder/userfiles/files/4291718388.pdfIn PDF document text
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c13ab3144672dee8e0bed18879a6ae31/23859867550.pdfIn PDF document text
- http://palenice.net/obrazky_clanky/file/miduzar.pdfIn PDF document text
- http://plkorea77.com/ckupload/files/21350572439.pdfIn PDF document text
- http://arci-mp.fr/admin/File/seseritedoxaviwevi.pdfIn PDF document text
- http://kimbuunguyen.com/uploads/userfiles/file/3631228970.pdfIn PDF document text
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/c41c5b24b14bd1bb30f025ede1dc1883/87936928607.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/0156ddd353bd5bcd6798ca3d48ae1c98/xilujefulabexesag.pdfIn PDF document text
- https://cafemocion.com/userfiles/file/33201034292.pdfIn PDF document text
- http://filatelianumismaticaumbra.it/userfiles/file/jugakavi.pdfIn PDF document text
- https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160718191e6269---34121819476.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c0e7cf0cf---gogonez.pdfIn PDF document text
- https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160752340d5255---niveleguniva.pdfIn PDF document text
- https://humicdp.com/uploads/2021-06-29/images/files/46361966049.pdfIn PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ccb673f98e---23035761835.pdfIn PDF document text
- https://sieuthimaytinhcu.vn/upload/files/bajuk.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106551b3d53d---40711609680.pdfIn PDF document text
- https://aznamaste.com/ckfinder/userfiles/files/zipimuxid.pdfIn PDF document text
- http://www.ks-zahnarztpraxis.de/upload/files/givebivus.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+do+i+find+out+if+old+coins+are+worth+anythingPDF 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_off00011714.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11714 | 11048 bytes |
SHA-256: 150cc502023a43fdb9e7a9adf9c838936fba080468b644f1d49c0b119aed3cb7 |
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font_01_sfnt_off00013092.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13092 | 17676 bytes |
SHA-256: 9048f5d4d1a8c8b4e98aa57d5229a2527be8a39226d2884b00b2ed627d44b631 |
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font_02_sfnt_off00015eb1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15EB1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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