Malicious PDF — malware analysis report

Static analysis result for SHA-256 a299be94a6ab6c85…

MALICIOUS

PDF

88.6 KB Created: 2021-04-05 20:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6279a72aaaa733ce175946570d1facde SHA-1: 5801e2240c0cc698006dd0f09043933f354db431 SHA-256: a299be94a6ab6c85dc301507e84dd56f46ef0140b6f3f3b93b62c4f2459daf45
66 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier strongly flagged this PDF as malicious, and the document body's mention of 'wifi hacker' suggests a lure to entice users to click the malicious link. No scripts were extracted, but the presence of multiple external links and the ML classification indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 4

  • 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://leonvi.ru/wix?keyword=wifi+hacker+full+apk+root PDF link annotation
    • http://kepidurenomabo.22web.org/17442361001.pdfIn PDF document text
    • http://help-violation.com/construction_robot_factorioyimd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378827/normal_606602018d7ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447093/normal_6010e50a9511e.pdfIn PDF document text
    • http://stnold.com/plot_the_vector_field._fx_y__x4_y4sidl1.pdfIn PDF document text
    • http://lisolu.org/79492801321ezh2q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_601e74c4ace75.pdfIn PDF document text
    • http://de-bewertung-889562.icu/tefimopifovasezoruzemlvo3t.pdfIn PDF document text
    • http://uscreditinquiry.info/wubibadsmq3g.pdfIn PDF document text
    • http://timinome.getenjoyment.net/xizojaviwaxin.pdfIn PDF document text
    • http://ideal-it.fun/vocabulaire_anglais_francais_par_theme7cl9b.pdfIn PDF document text
    • http://ekzo-fruit.ru/risk_analysis_in_project_managementuwmvy.pdfIn PDF document text
    • http://mufinofol.scienceontheweb.net/class_10_maths_coordinate_geometry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495039/normal_60088a9891970.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://4f0f5a39-0a2f-4cdf-b4e4-40a644fad8b9.filesusr.com/ugd/2024fe_f011c2b20a294175a9763a99ac141d14.pdf?index=trueIn PDF document text
    • http://livirava.atwebpages.com/sutojowevepibubolino.pdfIn PDF document text
    • http://besafetusupug.atwebpages.com/perbedaan_adsorpsi_dan_absorpsi.pdfIn PDF document text
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_7aec5e18e6684e288f61daeac915920d.pdf?index=trueIn PDF document text
    • http://fajesunuk.rf.gd/bibtex_online_report.pdfIn PDF document text
    • https://689a2394-1721-4ce0-b6f7-af9f1dc0d621.filesusr.com/ugd/0f5b72_543e452953a24bd8abab30a4fe30d8ad.pdf?index=trueIn PDF document text
    • https://6ce95562-7558-49ee-a7b0-b3003db3b0e9.filesusr.com/ugd/d13e1f_b8a69330758742dc8f13464946f4e2d7.pdf?index=trueIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_f55a2e8e1a7d43ab9b8426745cc105ba.pdf?index=trueIn PDF document text
    • http://vazujobanipixob.rf.gd/fimebapitebimiromuvunoxu.pdfIn PDF document text
    • http://devedejabamox.epizy.com/catalogo_asco_numatics.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C7 4780 bytes
SHA-256: 0d6bf5797f80c3d3b774d9784d7e04eeb63d2ce8bf0a5b60d691676ef05cb048
font_01_sfnt_off0001041f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041F 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00010cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAD 10312 bytes
SHA-256: 20a8978542e84ab8957c7189e4673b143da513a9e5ef3baa85ff3e62be4e3701
font_03_sfnt_off0001302b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1302B 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0
font_04_sfnt_off000145b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145B7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e