MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The presence of multiple unknown and potentially malicious URLs, combined with ClamAV detection and ML classification, strongly indicates a malicious intent. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The primary attack pattern appears to be directing users to a network of sites, likely for phishing or to serve further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 5
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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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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://golowaki.ru/123?utm_term=ansiedad+pdf+psiquiatria PDF link annotation
- http://uscreditcheck.info/20382248488x1mae.pdfIn PDF document text
- http://stonersfranchise.com/23720920779rq515.pdfIn PDF document text
- http://retys.fun/delonghi_pacan125hpec_filteruhk7y.pdfIn PDF document text
- http://kleomaften.online/rumovivunufasovotizogaac9qf.pdfIn PDF document text
- http://clipshd.design/tekonsha_prodigy_p3_brake_controllero92lp.pdfIn PDF document text
- http://xazivigufimu.22web.org/pitopasisajajomojo.pdfIn PDF document text
- http://canlisohbetim.net/arnold_schwarzenegger_biographyt85jv.pdfIn PDF document text
- http://idealica-italiaufficiale.website/group_rows_in_google_sheetslofeu.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/fonazuzixagizir/xevepesejarunim.pdfIn PDF document text
- https://f84ffea9-2755-49c2-9cb5-47ca8b55fe65.filesusr.com/ugd/0adedf_d8690b6de27148c9be40ca57958e0286.pdf?index=trueIn PDF document text
- http://waboxizolomove.rf.gd/mandated_reporting_elder_abuse_pennsylvania.pdfIn PDF document text
- https://s3.amazonaws.com/potofaw/mac_os_sierra_macbook_pro_2011_performance.pdfIn PDF document text
- https://s3.amazonaws.com/zibenoroduzuw/3876485219.pdfIn PDF document text
- http://laneladokeza.rf.gd/gudibidunuzukewu.pdfIn PDF document text
- https://s3.amazonaws.com/sazixipame/vanovobeledutakero.pdfIn PDF document text
- https://s3.amazonaws.com/liluvad/cbse_10th_answer_sheet_format.pdfIn PDF document text
- https://s3.amazonaws.com/woxewiwupir/indigo_djeca.pdfIn PDF document text
- http://wuwinot.rf.gd/english_grammar_basics_book.pdfIn PDF document text
- https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_4ab6226880b54d38843c367345d4a0f7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gowebabuxogiro/derenevekawidenagevaluwem.pdfIn PDF document text
- https://1fd079ea-3156-4ae8-a0b4-6153e0b529c5.filesusr.com/ugd/e66bf7_441bfe69f07947599cbdd15da0636533.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tasufagijaremo/diabetic_ketoacidosis_guidelines_pediatrics_2014.pdfIn PDF document text
- https://s3.amazonaws.com/napejaxosinages/heise_notepad_portable.pdfIn PDF document text
- https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_ef84810036bb4b1099a308c016d6d597.pdf?index=trueIn 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f086.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF086 | 28092 bytes |
SHA-256: 92841a1fbe6ebdf50dab10cc5509d88cb743c4e87b25a8787c806de6a6bdff6f |
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font_01_sfnt_off000147ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x147AE | 5116 bytes |
SHA-256: b3d92c430132ae275e6fb01f92c0e7aab37936f0dd5b7fa5084aef6536e99e2e |
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font_02_sfnt_off00015925.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15925 | 11492 bytes |
SHA-256: 256e8607141d891a832754f8cfcfcb7f1d96b12ee9d190c9cca80c0df787d408 |
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font_03_sfnt_off00018050.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18050 | 16092 bytes |
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848 |
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