MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Several heuristics indicate the PDF functions as a link farm, directing users to compromised CMS uploads and disposable hosting sites. While no scripts were explicitly extracted, the presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics suggests an attempt to distribute malicious content or phish users through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://top1np.com/ckfinder/userfiles/files/xanefisevovigodezusukaku.pdf
- https://ketex.com/trcgp/ckfinder/userfiles/files/pejodaxob.pdf
- http://avision-italia.com/userfiles/files/77130341582.pdf
- http://f-okinawa.com/img/tmp/file/rupexufulog.pdf
- https://cobrawire.com/userfiles/files/dogurugimi.pdf
- https://www.aledrukujemy.pl/ckfinder/userfiles/files/46011617714.pdf
- http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/bogigatemaluxudow.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161326816aa9cd---3682971510.pdf
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f50f9212a---3849428754.pdf
- http://mikailang.com/userfiles/file/20210908025919_1321043811.pdf
- https://bostoncake888.com/UserFiles/files/73154798721.pdf
- http://peknanevesta.sk/media/file/65632044340.pdf
- https://doanandieuduong295doson.vn/namthuan/images/news/files/vojerunetaruruzesodivako.pdf
- https://ferado.vn/userfiles/file/lamabov.pdf
- http://gdfsztal.com/uploadfile/files/65826312187.pdf
- http://studiogalata.it/userfiles/files/gozobiserubepisabejajuve.pdf
- http://15449010.com/FileData/ckfinder/files/20210906_A65B9CD28CBB8944.pdf
- https://aashianarealty.com/file/rugonutozup.pdf
- http://dansecyr.ca/pdf/file/senex.pdf
- http://koreadramatour.com/FileData/ckfinder/files/20210906_6F1AF0BCF564E33E.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f38812c453---gimefiwulepijulepupamox.pdf
- https://zivotzaokny.eu/res/file/tonifurot.pdf
- https://aicpwdosaeast.com/ckfinder/userfiles/files/sapipujujikozajudavo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+to+draw+a+frog+step+by+step
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e3ee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3EE | 16792 bytes |
font_01_sfnt_off0000fc05.bine2e59bd62df8fb74820e54191d537d0f9664837ff90a86d8a12ffe89aa082db0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC05 | 10764 bytes |
font_02_sfnt_off00011484.bine1415620be5f1ea0ab635dd6a7d8f3b8980823df1976e3a70d7cf5c50717ed85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11484 | 17276 bytes |
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