MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of URLs with 'utm_term' parameters indicates an attempt to track user engagement with lures like 'free instagram real likes', likely as part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://crysiq.ru/uplcv?utm_term=free+instagram+real+likes PDF link annotation
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140e308abf2d---rejeturavuz.pdfIn PDF document text
- https://cafesca.mx/ckfinder/userfiles/files/darivuranofasimivoja.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/7855440750.pdfIn PDF document text
- http://gallery4walls.com/upload/editer/file/latuziviwusepuratipama.pdfIn PDF document text
- https://elsa-daulte.com/ckfinder/userfiles/files/nonekewogatewijizurojemeg.pdfIn PDF document text
- https://client-sms.com/ckfinder/userfiles/files/50650784472.pdfIn PDF document text
- https://jager-ig.tw/up_photo/file/vavaboroti.pdfIn PDF document text
- http://vce34.ru/attachments/file/33063159145.pdfIn PDF document text
- http://teewer.mn/ckfinder/userfiles/files/dabunis.pdfIn PDF document text
- http://debeleven.net/UserFiles/File/xomalo.pdfIn PDF document text
- http://t-cso.com/upload/file_folder/file/saxikikizabazadip.pdfIn PDF document text
- https://ringid.vn/ckfinder/userfiles/files/bewozekigop.pdfIn PDF document text
- http://xn--o39a91gvwm83kbsn.net/FileData/ckfinder/files/20210909_E2A08862DE1CA89B.pdfIn PDF document text
- http://opuspoint.com/ckfinder/userfiles/files/32290667087.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/hot476aiodtepjtkpediktq7ii/56037878043.pdfIn PDF document text
- https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/belavagekameje.pdfIn PDF document text
- http://fireprovietnam.net/luutru/files/57698782221.pdfIn PDF document text
- http://polyacer-ecp.com/userfiles/files/20210922_170634.pdfIn PDF document text
- http://luxlustry.ru/img/upload/12228188537.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613f48cf50aa9---wupuxofimejadotovera.pdfIn PDF document text
- http://ydchem.cn/filespath/files/20210924152436.pdfIn PDF document text
- http://interstroy96.ru/uploads/files/21788832521.pdfIn PDF document text
- http://mitcostruttori.it/userfiles/files/75547145628.pdfIn PDF document text
- http://unionnutritech.com/upload/files/48864647705.pdfIn PDF document text
- 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_off0000b40a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB40A | 10400 bytes |
SHA-256: f15f5c7ae38592e71677075dc94e31b0507d7910565ac82397b26787b4b43a58 |
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font_01_sfnt_off0000cb88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB88 | 17976 bytes |
SHA-256: 62ee97c12715fa095692686d4fe164095fefa67b328c65af914c5cbb5c41132f |
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font_02_sfnt_off0000f990.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF990 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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