Malicious PDF — malware analysis report

Static analysis result for SHA-256 909d2e3b03f1774b…

MALICIOUS

PDF

77.4 KB Created: 2021-03-14 15:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f96902be0a46ba1b92366534f90f9699 SHA-1: d6b4c11b715e990cd7a3c2114a2b72536e680f9e SHA-256: 909d2e3b03f1774b36b2d9ad988c88138a925455310a2b3e63d93cf82c3dadbe
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to suspicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=photo+specialist+job+description+for+resume
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/sozefexa.pdf
    • https://bekodezu.weebly.com/uploads/1/3/1/8/131856725/tumajupoluba.pdf
    • http://prostotit.site/nudotulavigoxukasoratosig1dd7t.pdf
    • https://cdn.sqhk.co/vopupevomate/05jd550/karolit.pdf
    • http://vijexibat.mywebcommunity.org/adobe_photoshop_cs5_64_bit_crack_download.pdf
    • https://cdn.sqhk.co/wodabakope/jemgeDC/marketplace_mall_food_court_hours.pdf
    • https://pexigupor.weebly.com/uploads/1/3/4/9/134901766/2610588.pdf
    • https://cdn.sqhk.co/vulovosovem/cjgd1WY/gumoloxakage.pdf
    • http://samoe-samaya.ru/49084632773qsjaw.pdf
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/kabirafo-porofa.pdf
    • http://konolux.medianewsonline.com/refupibarutiwufibix.pdf
    • http://jakivuxevova.22web.org/movie_about_the_first_black_navy_diver.pdf
    • https://cdn.sqhk.co/sututidogo/T8K44ie/mijukuse.pdf
    • http://virona.org/73375100529yjyvv.pdf
    • https://cdn.sqhk.co/falugojafat/yjjJPvE/what_did_the_apache_tribe_use_for_shelter.pdf
    • https://migigagabigugam.weebly.com/uploads/1/3/0/7/130775968/vibomavu_supimigutager_xileru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6cb1c90e-07cf-4522-b85d-4edd8abc33c8.filesusr.com/ugd/0c41e7_16f292801cca4da3b5fa139c5abe634a.pdf?index=true
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_25df597ca2cc4d17a4c0663d763c2824.pdf?index=true
    • http://duxemebuwejaw.rf.gd/tratamiento_de_amigdalitis_bacteriana.pdf
    • https://0b609444-e5a2-4a7e-9779-a3c6bae51a53.filesusr.com/ugd/529dbf_3a160030c53d4e6eb679820d9e9817d3.pdf?index=true
    • http://foxivowopejo.rf.gd/bixegefukex.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f050.bin
5f4c50e4141f7fda852ef17a806138dc618bad879fed9340b7d6fd0e4474ff95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF050 5612 bytes
font_01_sfnt_off0001033c.bin
87ac5e67d0ff650367c4958fe6042a83a2d57c9263bb049cfc62d80b1fd90958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1033C 10832 bytes

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