MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of multiple PDF link farm heuristics, including links to compromised CMS uploads and disposable hosting, suggests a phishing or malware distribution scheme. The embedded URLs and the document body, though heavily obfuscated, point towards a lure for downloading further content, likely a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://infrive.ru/uplcv?utm_term=read+the+witcher+books+online+free PDF link annotation
- https://laplacedesstores.com/upload/file/18520186653.pdfIn PDF document text
- http://21cedu.com/pds/userfiles/files/23665414887.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/161357ccf2febc---vezesosuke.pdfIn PDF document text
- http://metabolit.ru/files/file/gofinipol.pdfIn PDF document text
- https://digireg.gr/upload/totoguzijeronojor.pdfIn PDF document text
- http://emblem4home.com/UserFiles/Member/File/36643634393.pdfIn PDF document text
- http://ecohort.com/userfiles/files/87867901438.pdfIn PDF document text
- https://kingcarmotorista.net/uploads/files/xotid.pdfIn PDF document text
- http://szjglaw.com/uploadfile/file/2021091100075673499.pdfIn PDF document text
- http://www.ctnphrae.com/ckfinder/userfiles/files/nelixojidugekodesepudi.pdfIn PDF document text
- http://auto4-spb.ru/public/images/ckfinder/files/90745303680.pdfIn PDF document text
- http://dzstock.com/Upfiles/file/satotedavajem.pdfIn PDF document text
- https://menu2uplus.com/images/file/34114641176.pdfIn PDF document text
- http://baove247.org/upload/files/fediwu.pdfIn PDF document text
- https://produktybhp.pl/pliki_user/File/5254124963.pdfIn PDF document text
- http://www.europesolidaire.eu/userfiles/files/82155845919.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/sd107ne28fpus77ivlte1irrft/4957007399.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141c3d0bc333---71390399874.pdfIn PDF document text
- https://dhrc.in/userfiles/file/35969296382.pdfIn PDF document text
- http://lateonsettay-sachs.org/userfiles/file/75189260720.pdfIn PDF document text
- https://flyags.com/editorResources/file///janonanoboxemepagonezozu.pdfIn PDF document text
- http://e1pl2.nazwa.pl/busy/fotki/file/pofuwifav.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_off0000dbfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBFC | 10936 bytes |
SHA-256: 0e57ca7df9f5e4e2260c4fcbacaba4f62aebe1e3f7efec76966e5b9428d74213 |
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font_01_sfnt_off0000f54a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF54A | 19012 bytes |
SHA-256: 1b301ea182636e4aeeb89de6c333dd29fb572538006387e96f76ac551dc27a5d |
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font_02_sfnt_off00012623.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12623 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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