Malicious PDF — malware analysis report

Static analysis result for SHA-256 484aebdbca25e148…

MALICIOUS

PDF

67.9 KB Created: 2021-03-13 19:36:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7e7e9abe4ec00356cbb5dc75f8c981ce SHA-1: 996ae3e89517afd65302f273f5ab35d8209f8c52 SHA-256: 484aebdbca25e148d11e02544623ab0d1eed77d2d5e746b82353cb7e6e133ce1
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or redirection scheme. The document body, though heavily obfuscated, appears to contain metadata related to PDF creation and potentially decoy text, further supporting a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://golowaki.ru/123?utm_term=goulds+3196+pump+data+sheet PDF link annotation
    • https://cdn.sqhk.co/rogumabutur/iiifge6/hidden_objects_fairy_tale.pdfIn PDF document text
    • http://vakiduweg.mygamesonline.org/viktor_frankl_mans_search_for_meaning.pdfIn PDF document text
    • http://vumejopiraxu.mywebcommunity.org/barisal_university_question_bank.pdfIn PDF document text
    • http://bexabif.22web.org/sozatixubiregulakufavita.pdfIn PDF document text
    • http://vojumugojiliwa.iblogger.org/96921174061.pdfIn PDF document text
    • https://cdn.sqhk.co/matijamaj/z8jfljh/dagudumorasakud.pdfIn PDF document text
    • http://moperala.iblogger.org/mozebazadewikupetutafiw.pdfIn PDF document text
    • https://cdn.sqhk.co/sapekuzob/igsumih/cgi_full_form_in_films.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bevoxoxoj.epizy.com/how_to_turn_off_a_nintendo_switch_pro_controller.pdfIn PDF document text
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_01893cadb89f415d806da5974d761c8f.pdf?index=trueIn PDF document text
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_0bc9d2f2b4154c6bb123b1fe657c8eb6.pdf?index=trueIn PDF document text
    • http://gigirisezox.rf.gd/ninja_foodi_blender_target.pdfIn PDF document text
    • http://medetoti.epizy.com/25527532063.pdfIn PDF document text
    • http://nukasero.epizy.com/self_forgiveness_guided_meditation_script.pdfIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_c0f6af9e358e42c2ba6e007c45216863.pdf?index=trueIn PDF document text
    • http://zoluwupaxefiv.rf.gd/saab_bahadar_full_movie_hd_worldfree4u.pdfIn PDF document text
    • http://meludakezadew.epizy.com/lubava.pdfIn PDF document text
    • https://36535336-4f9e-4c0a-b1ad-3385cb5d4299.filesusr.com/ugd/15ebe2_11b2c4b9691841958154d2c9d2ff3bb6.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4B 5660 bytes
SHA-256: 1056ddaa2b50564ff2786a576d36017c544977bcd3fc847a4cb265e7de712085
font_01_sfnt_off0000df5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 9836 bytes
SHA-256: 41cf234608a65a57dda6aa363f4c55fd2b0215fe020b6819226ab3462bc2458e

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