MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, but no clear textual lure. The presence of numerous external URIs and the 'PDF_SEO_LINK_FARM' heuristic indicate the primary function is to redirect users to potentially malicious or deceptive content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://nipisod.ru/strik?utm_term=jorge+luis+borges+poemas+cortos PDF link annotation
- https://cdn.sqhk.co/rigizisojix/hdgchit/jovivarepulapob.pdfIn PDF document text
- https://cdn.sqhk.co/feneradebeza/hcPPmzT/what_does_contemplate_mean_in_literature.pdfIn PDF document text
- https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/vudalami.pdfIn PDF document text
- https://cdn.sqhk.co/jetirivotu/iibThid/kupipofubavoked.pdfIn PDF document text
- https://cdn.sqhk.co/ruxodinumoro/gjIjj82/easy_diy_halloween_costumes_couples.pdfIn PDF document text
- https://cdn.sqhk.co/govazilose/dxKggdP/faire_conjugation_subjunctive.pdfIn PDF document text
- https://penaxixix.weebly.com/uploads/1/3/0/8/130813526/xadupobewirupiwima.pdfIn PDF document text
- https://cdn.sqhk.co/zativojor/aie01ja/online_master_s_degree_in_communications_marketing.pdfIn PDF document text
- https://mokoxofedig.weebly.com/uploads/1/3/4/8/134891763/f09544bb07fa606.pdfIn PDF document text
- https://jeporifitev.weebly.com/uploads/1/3/4/2/134265357/54ae9c92.pdfIn PDF document text
- http://faladen.22web.org/data_manager_job_description_clinical.pdfIn PDF document text
- https://xigowepuge.weebly.com/uploads/1/3/6/0/136082497/pixokalenufe.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/fewunadupop/silijugubevidofaveduwiran.pdfIn PDF document text
- http://muporomeg.rf.gd/25638050178.pdfIn PDF document text
- http://xeziredo.epizy.com/fisimoloxopa.pdfIn PDF document text
- http://vovokab.rf.gd/bozanstvena_komedija_dante_alighieri.pdfIn PDF document text
- https://s3.amazonaws.com/lerezazo/lagu_betrayed_avenged_sevenfold.pdfIn PDF document text
- https://s3.amazonaws.com/liwafo/xafawagajutiso.pdfIn PDF document text
- https://s3.amazonaws.com/bejikefowu/96651392853.pdfIn PDF document text
- https://s3.amazonaws.com/libowebujakux/statistical_inference_books_free.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://scripts.sil.org/OFLIn 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_off00010f4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F4D | 5380 bytes |
SHA-256: 1902c23f783c298d83d00f3aef661fd813eae47c96db8cc31d4eb2d3dd4910fd |
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font_01_sfnt_off00012180.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12180 | 9100 bytes |
SHA-256: cb96ef764d9df761e05681952dbd7aa32343ff536c629ce841e52ce444a5725a |
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font_02_sfnt_off0001409f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1409F | 16204 bytes |
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449 |
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