MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The numerous embedded URLs point to compromised websites and link farms, suggesting a phishing or malware distribution scheme. The file's structure and the presence of external links indicate it is likely intended to redirect users to malicious content, potentially as part of a spearphishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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://catamma.ru/uplcv?utm_term=c+by+discovery+4th+edition+pdf+download PDF link annotation
- http://lamekatus.ee/uploads/ckeditor/files/15216902829.pdfIn PDF document text
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/17e74378bbc14b01b3af5b1fd0999dcf/ragikubatisegumusovijude.pdfIn PDF document text
- http://schokoladenfontaene.de/idata/wufetojuw.pdfIn PDF document text
- http://nebo52.ru/uploads/files/57139595377.pdfIn PDF document text
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98e131765---83032289048.pdfIn PDF document text
- http://alemotta.com/resources/original/file/jesevibafufewofigel.pdfIn PDF document text
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7488e384d---78738474819.pdfIn PDF document text
- http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/62b6ccf2613e32839c7cd87c708ed533/2115537792.pdfIn PDF document text
- http://netisiletisim.com/guvennet/resimlerfiles/pimalufutonu.pdfIn PDF document text
- https://transmilenio.net/datamont/userfiles/file/jalakalanofa.pdfIn PDF document text
- http://lienming-rubber.com/uploads/files/202108132313457309.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/f3e0cc1da7b8cd685d1d9b59c0f20329/kaxogumikexegefet.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/0ac7cff0be93b6e5822e96d411bbc5e6/75827550427.pdfIn PDF document text
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/detafajuvivamonataku.pdfIn PDF document text
- https://almuhja.ps/ckfinder/userfiles/files/fogojiguwozovesox.pdfIn PDF document text
- http://michelschuurmans.nl/images/uploads/file/jofevagibuzuzopifelu.pdfIn PDF document text
- https://aashianarealty.com/file/70100940564.pdfIn PDF document text
- http://travelci.ru/ckfinder/userfiles/files/36510645683.pdfIn PDF document text
- http://kppzp.pl/userfiles/file/98348401674.pdfIn PDF document text
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/3ee58836b3caf7b0cbdee0a5c6ffb80c/bezepilivoda.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_off0000c796.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC796 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dfad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFAD | 11232 bytes |
SHA-256: 2899751624c6be206e148ef8c50424bda4e6607b9505ada7f5ebfdc88e2724b4 |
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font_02_sfnt_off0000f9db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9DB | 16788 bytes |
SHA-256: f7acbc29e6813a3a1f087206e482d4226a40f7a0bb8211a9f5dfd8dd092b7b91 |
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