MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous embedded URLs that point to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the true malicious destination. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://archism.ru/uplcv?utm_term=fortnite+skin+changer+hack
- http://abwrichmond.com/uploads/files/14520093793.pdf
- http://bobmeetin.com/media/galleries/files/nodupokupig.pdf
- https://www.ruchya.com.tw/upload/files/53422248222.pdf
- http://hykylalumni.org/userfiles/14885943014.pdf
- http://thepnguyentran.com/media/ftp/file/vofovesuvi.pdf
- https://casasholidays.com/scgtest/team-explore/uploads/files/3190429504.pdf
- https://www.rougeindigo.com/ckfinder/userfiles/files/70734883741.pdf
- http://xn--dlek-5qa.com/admin/UserFiles/file/25371356130.pdf
- https://hostsolutions.ro/app/webroot/files/userfiles/files/fuwadotewok.pdf
- https://ozora.schaffsen.com/contents/file/20156964963.pdf
- http://www.tramag.pl/upload/file/28479786087.pdf
- https://wanna-drive.nl/files/File/rutexovorutejutuxiwo.pdf
- http://ronaldtan.nl/images/photo/tuxugevifuz.pdf
- https://matricula.netlandschool.cl/files/28449954369.pdf
- https://zabulgaria.org/userfiles/file/45808680944.pdf
- http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/jujumemupazazepaw.pdf
- http://5lovestartw.com/CKEdit/upload/files/jexepojorosanopogikob.pdf
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/0d4dac33ad021ce7a05ed9d765dc2b99/96967545549.pdf
- http://blekinge.boj.se/uploads/userfiles/files/46792589597.pdf
- https://subded.org/userfiles/file/56530194550.pdf
- https://delcinfo.ru/img/files/files/41474724477.pdf
- http://hsound.ro/images/custom/file/duvukinejoxufi.pdf
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/7805874048f3958a3c97b87be513a33b/vitotuf.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f63d49d616---73182062372.pdf
- http://finpacecuador.com/userfiles/file/57026668391.pdf
- 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_off0000bba0.binaa445a5bbd7108cc56e5269a9badce99dcd6e838c220603c816c3e5f89d5fbb9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBA0 | 10532 bytes |
font_01_sfnt_off0000d397.bin82187b72085f1430ecc6ae242d890453e502779b97c2b4f5e041b987030a87e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD397 | 17404 bytes |
font_02_sfnt_off0000ffc0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFC0 | 16792 bytes |
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