MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics as containing a link farm and pointing to compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest a phishing or malware distribution scheme, likely using a spearphishing attachment as the initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 6
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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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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://coretry.ru/uplcv?utm_term=how+to+do+time+lapse+video+on+android PDF link annotation
- http://solarhomepage.ch/fckeditor/editor/images/file/tasoxupenifunudam.pdfIn PDF document text
- http://nextgenship.net/upload/file/20210902163056150952.pdfIn PDF document text
- http://pnktools-th.org/ckfinder/userfiles/files/6722999208.pdfIn PDF document text
- http://stylekd.ru/files/67892488702.pdfIn PDF document text
- http://autodilygood.cz/files/file/winalikajazixirilodo.pdfIn PDF document text
- http://skyrybupaslaugos.lt/uploads/files/89775609892.pdfIn PDF document text
- http://automsystem.com/UploadFile/file/20210913015620554.pdfIn PDF document text
- https://condicionamentofisico.com/arquivos/file/5145175193.pdfIn PDF document text
- https://groupburuemas2.com/contents/files/zixosaromoxirasokera.pdfIn PDF document text
- https://atputasbaze.lv/images/userfiles/files/49689903534.pdfIn PDF document text
- http://aias.pnu.ac.th/ckfinder/userfiles/files/42656128349.pdfIn PDF document text
- http://saeronbio.com/userData/board/file/wofobajesakun.pdfIn PDF document text
- http://topoint.cc/userfiles/fckFile/20210906061907.pdfIn PDF document text
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138171e45ecc---58898725453.pdfIn PDF document text
- https://trinityautorepairs.com/uploads/files/44205982668.pdfIn PDF document text
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613df8f9143ec---losat.pdfIn PDF document text
- http://fabtur.ru/upload/files/defen.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138138ee7906---lazow.pdfIn PDF document text
- http://yakutiaprime.ru/SITE/files/editor/file/judojegedezevedetutemek.pdfIn PDF document text
- http://fzcce.com/aimgs/uload/files/45012817471.pdfIn PDF document text
- http://fisioterapiasuzzara.it/userfiles/files/kopijus.pdfIn PDF document text
- http://alphasigmaoverseas.com/userfiles/file/benojeju.pdfIn PDF document text
- http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gilinuwamizorudekugaz.pdfIn PDF document text
- https://marosme.ro/hirek/file/13358678607.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_off0000b07f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB07F | 10696 bytes |
SHA-256: 4dbc6ed5ce4b4bb079840d8b2a2f615c1eef8ef0feba89f96ab5ce67d45a3b09 |
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font_01_sfnt_off0000c904.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC904 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e116.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE116 | 14520 bytes |
SHA-256: 35436c8a5d0e7c45cba873802ee459d9b603e85a5027759b9f1b8b76df5930eb |
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