MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a link farm pointing to multiple distinct hosts, suggesting it's designed to redirect users to potentially compromised sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating the use of disposable or compromised hosting for malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/tromo9egd8jvcdn287ai1tqv43/wavowopuwadofesove.pdf In PDF document text
- http://alarcon-v.com/editor_upload_image/file/guxemo.pdfIn PDF document text
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f10b600d747---logafupalojunazev.pdfIn PDF document text
- http://takemehometomatoes.com/ckfinder/userfiles/files/25044965015.pdfIn PDF document text
- http://studio-castiglioni.com/userfiles/files/fomagabatukefejamesufa.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ccebb01fa677f9286d78f466daa1e9d3/89803217171.pdfIn PDF document text
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a31d7b96c---20507384400.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/410ed57fa6eea37f3b74bd75952b5135/sagibapepelag.pdfIn PDF document text
- http://finchamauto.com/pics/36677710684.pdfIn PDF document text
- http://linpus.com/app/webroot/userfiles/files/pinuwevup.pdfIn PDF document text
- http://alrabbancapital.com/file/files/93615434220.pdfIn PDF document text
- https://picinterior.com/ckfinder/userfiles/files/65969187543.pdfIn PDF document text
- http://phuclocvienjsc.com/uploads/image/files/71288966884.pdfIn PDF document text
- https://kuzeyilac.com/resimler/files/nikugezirelimirebe.pdfIn PDF document text
- http://grandrosso.com/js/upload/files/14473058595.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/15l0kcgkuq5at7fp1n8b2gat7n/217196333.pdfIn PDF document text
- http://minhvuongthuphap.com/upload/ck/files/xesazawirotudimokepis.pdfIn PDF document text
- http://stepasidemedical.com/images/uploads/file/94992389720.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7a9b79f7e---xukifo.pdfIn PDF document text
- https://szallas-karpatalja.net/upload/66443833773.pdfIn PDF document text
- http://sieuthibongda.net/ckfinder/userfiles/files/wuzezafatusifumaxudodaze.pdfIn PDF document text
- http://ural-resyrs.ru/data/file/lizozowegolafurone.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5341c16fe---55197823432.pdfIn PDF document text
- https://eksiliotomotiv.com/upload/ckfinder/files/tamuwuvami.pdfIn PDF document text
- http://omak1968.com/clients/71178/File/fowekunilapew.pdfIn PDF document text
- http://busangh.com/attfile/fckimg/file///20210731211432_1025688164.pdfIn PDF document text
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/a8b9bd7bd2d03875f00a436b2fd03e39/97815900018.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=minecraft+pe+0.14+0+aptoidePDF 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_off0000cb67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB67 | 21164 bytes |
SHA-256: b22435650dacdc3b142054b144856764ab8e655b48090cfda61a59b88bc57b81 |
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font_01_sfnt_off0000ff91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF91 | 10712 bytes |
SHA-256: a5054328255b56823e2833ef295ba289836d4dd57d7fdae7c6cb90b10ee4f836 |
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font_02_sfnt_off00011852.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11852 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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