MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
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 contains a link farm, with many URLs pointing to compromised WordPress upload directories or disposable hosting. These links likely serve to redirect users to malicious content or phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://tanhoaphat.vn/userfiles/file/voziku.pdf In PDF document text
- http://lnhaihui.com/userfiles/file/20210907145022_582761472.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161339caf6048c---97535787699.pdfIn PDF document text
- https://bengalroys.com/ckfinder/userfiles/files/nasosidigawuvapuzexujeg.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/8k353eb1g0t7r80rsq07dktfva/12607108865.pdfIn PDF document text
- http://kcntanduc.vn/img_duhoc/files/4212640944.pdfIn PDF document text
- https://nabijdefossa.nl/upload/files/tuzarejulazuj.pdfIn PDF document text
- https://valergences.fr/userfiles/file/65758763499.pdfIn PDF document text
- http://www.extramas.com/userfiles/files/wetur.pdfIn PDF document text
- https://granitabrasive.hu/editor_up/99654550796.pdfIn PDF document text
- http://thelifelesson.net/home/tappingchanges/public_html/dowalumniusa/ckfinder/userfiles/files/8464922175.pdfIn PDF document text
- http://chanakyaaerospacedefence.com/userfiles/file/mupovinixaxegunogawu.pdfIn PDF document text
- http://www.cenlajobinator.com/siteuploads/editorimg/file/duzavo.pdfIn PDF document text
- http://vinag7furniture.com/app/webroot/files/editor_upload/files/89116969906.pdfIn PDF document text
- https://greenline.bg/userfiles/file/bupunugomasununu.pdfIn PDF document text
- https://shreenatharcade.com/userfiles/file/16374819774.pdfIn PDF document text
- https://angel-juicer.com/FileData/ckfinder/files/20210905_048F42674F094A6E.pdfIn PDF document text
- http://jsushibrea.com/uploads/files/95868080628.pdfIn PDF document text
- https://codecs.ro/images/file/rosojixawigobivebi.pdfIn PDF document text
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613195dbcc16c---41014260803.pdfIn PDF document text
- http://tonioloclaudio.it/userfiles/files/43500252349.pdfIn PDF document text
- https://watertorens.nl/userfiles/file/wokozomipasodifu.pdfIn PDF document text
- http://satcomlink.com/userData/board/file/30005960420.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=bollywood+movie+online+2019PDF link annotation
- 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_off000105db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105DB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00011ded.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DED | 17264 bytes |
SHA-256: ab156a80e8dffe16a03b8addd1ae452cac955e4f5a371cf77c67ac97198c5e85 |
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font_02_sfnt_off00014abc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14ABC | 10660 bytes |
SHA-256: 79a64b0a2d4491ab35bb98ea3ae75319365d2cc3efd589a4a57e1d3267f53e09 |
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