PDF malware analysis — malicious · 4e42dc2ca4c81672

MALICIOUS

PDF

86.7 KB Created: 2021-03-31 09:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: ebcc6800fc280c0890df8c4137995834 SHA-1: 1e685feba35c521bf47e1093b6a2e8438c449b9b SHA-256: 4e42dc2ca4c816725fde0dd0c5561ceb494f45fdf8ffd673bc111cb6a75abe63

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a strategy to obscure the true malicious destination.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://jacksth.ru/award?keyword=antara+ibn+shaddad+pdf PDF link annotation
- http://wutopezogegusi.getenjoyment.net/bernoulli_s_equation_derivation.pdfIn PDF document text
- https://zomutelisofo.weebly.com/uploads/1/3/4/7/134712892/f046eaa.pdfIn PDF document text
- http://lukufogud.getenjoyment.net/fumekamedisidu.pdfIn PDF document text
- https://bitusuverutito.weebly.com/uploads/1/3/1/8/131871453/mabojejavofabajinizi.pdfIn PDF document text
- http://hookup750.website/bhoomi_film_all_songyga3r.pdfIn PDF document text
- http://kovativegapok.getenjoyment.net/posiworimokukufujota.pdfIn PDF document text
- http://tijukilebag.getenjoyment.net/ufc_female_strawweight_champion.pdfIn PDF document text
- http://sutobep.getenjoyment.net/peroxesagisojojoberite.pdfIn PDF document text
- https://piluzixalevuj.weebly.com/uploads/1/3/5/3/135345731/6932818.pdfIn PDF document text
- http://justamorem.com/40495078070tiimb.pdfIn PDF document text
- https://cdn.sqhk.co/zarepowake/hbhagje/tufoj.pdfIn PDF document text
- https://cdn.sqhk.co/muwazubivotu/6BogdgA/invoice_maker_estimate_invoice_app.pdfIn PDF document text
- https://zevupizufaf.weebly.com/uploads/1/3/4/3/134315684/gogejugu_fugaruwa_tesodetilokowej.pdfIn PDF document text
- http://leririv.sportsontheweb.net/manual_prtico_controle_interno_administrao_pblica_municipal.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/d4fcea2c-3761-4a25-961f-d9f0fea9f417/feminomesajogeposenojopi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9bba44ab-7463-4ea8-9b1f-b13efabd0e17/96449290236.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e4326ee3-e9a8-417a-9ff4-a4abe2fa202f/57453137364.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/10d3c777-af10-4086-802e-682034702ea6/65593017398.pdfIn PDF document text
- http://suruliloxapesas.myartsonline.com/xekifozogadawajukadumidiv.pdfIn PDF document text
- http://mifojizu.myartsonline.com/jowogesolanuj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6ad9b681-9a92-4211-a3d4-3463e026abf6/wolujetekalamibetiwitom.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_off0000f720.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF720	5228 bytes
SHA-256: `d68d84b31f26fa806c7bbba0f49d3073b3ed87050d577782efb17341df5b8ec1`
`font_01_sfnt_off000108da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108DA	12604 bytes
SHA-256: `d083c97aa87bdf800aae89a8196afef95ba96d24873f111f0bbb24e6cc6b3e10`
`font_02_sfnt_off00013134.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13134	17840 bytes
SHA-256: `6032540a6bcc4cf36d700369164896c2f927f215d06caee844c01fc1f55e3fc9`

Open this report in the interactive analyzer, or submit your own file for analysis.