PDF malware analysis — malicious · e7049d5ed87c04d9

MALICIOUS

PDF

82.9 KB Created: 2021-04-06 23:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 2bb7102f80fcaf24667762b394f35a61 SHA-1: 00c9f6621b19e4af81bf185cf0a1f4ad5325ed2d SHA-256: e7049d5ed87c04d98ae0afc352d8aadaef0f2b3905c41379dca68cd6d6c506a4

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO manipulation or to host malicious content. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document prompts the user to install a browser extension or update, a common social engineering technique. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to trick users into downloading further malicious content or compromising their systems.

Machine Learning

Nyx PDF Classifier malicious score 0.9970

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small 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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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://resalured.ru/award?keyword=clinical+anesthesia+massachusetts+pdf PDF link annotation
- http://benivosefemiza.medianewsonline.com/platonic_and_archimedean_solids_daud_sutton.pdfIn PDF document text
- http://dewisazovuvoxi.mywebcommunity.org/plant_systematics_a_phylogenetic_approach_fourth_edition.pdfIn PDF document text
- https://jurogewogil.weebly.com/uploads/1/3/4/3/134318518/320722c131c2cb.pdfIn PDF document text
- http://vuvajujuli.mygamesonline.org/gifipazizililapasi.pdfIn PDF document text
- https://fabebebu.weebly.com/uploads/1/3/2/7/132740756/xovidowavifap.pdfIn PDF document text
- http://kafofal.mygamesonline.org/18827487269.pdfIn PDF document text
- http://rumurel.mywebcommunity.org/magnum_inverter_fault_codes.pdfIn PDF document text
- http://pukujadud.getenjoyment.net/1_cup_cooked_bow_tie_pasta_calories.pdfIn PDF document text
- http://tinesemexogo.mygamesonline.org/jepome.pdfIn PDF document text
- http://zevupixikug.mywebcommunity.org/27757847755.pdfIn PDF document text
- http://katipef.medianewsonline.com/cours_grammaire_anglais_gratuit.pdfIn PDF document text
- http://tofugezupeb.mygamesonline.org/35504924771.pdfIn PDF document text
- https://guxelopadak.weebly.com/uploads/1/3/4/7/134727887/mabikinapone.pdfIn PDF document text
- https://bilunoxenaxu.weebly.com/uploads/1/3/4/4/134474733/karewumej-ramepatogeko.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/farowug/how_to_create_a_flow_map.pdfIn PDF document text
- https://s3.amazonaws.com/livivuvuwugeb/91005034738.pdfIn PDF document text
- http://gafodix.myartsonline.com/badagixokitejojolukunit.pdfIn PDF document text
- https://s3.amazonaws.com/tetofamuxulil/chili_boss_burger_nutrition_information.pdfIn PDF document text
- https://s3.amazonaws.com/meludav/zugamosirubuterem.pdfIn PDF document text
- https://s3.amazonaws.com/jutenojamega/78271892692.pdfIn PDF document text
- http://telusomabufa.onlinewebshop.net/kezag.pdfIn PDF document text
- https://s3.amazonaws.com/toniseligiwuzux/medical_imaging_physics_course.pdfIn PDF document text
- http://geforagegi.atwebpages.com/metabolismo_del_etanol_bioquimica.pdfIn PDF document text
- https://s3.amazonaws.com/sefiwegegagu/60277826988.pdfIn PDF document text
- http://wavexijazibivat.myartsonline.com/tajuzosewulanobali.pdfIn PDF document text
- https://s3.amazonaws.com/gumegulaxi/bigufisexaxolew.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001062a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1062A	5204 bytes
SHA-256: `fc9cce239e3db1ace2cb82d674c351c2f9bb5246f9e540f3a49f902890bc9c21`
`font_01_sfnt_off000117b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117B6	11268 bytes
SHA-256: `95d797ae55b3416c502959f6001433430f4ec12b25359008a5fcc1457e065ef2`

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