Malicious PDF — malware analysis report

Static analysis result for SHA-256 be491c7153da5efd…

MALICIOUS

PDF

70.9 KB Created: 2021-03-12 04:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ace37c159f0a75f5e91f4852bc441c25 SHA-1: c6c4b3d4a961164a785e539690b2bb2b652c9f19 SHA-256: be491c7153da5efd0e7c4d3b0dda6993a119956d3598783b75edaa51056f69d4
64 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9649

Heuristics 3

  • 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
  • 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://gimoguvi.ru/award?keyword=aromatic+chemistry+pdf PDF link annotation
    • http://1-bog.ru/lasofustbpu.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/3fAhahg/odd_man_inn_patreon.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/gj5jahj/zellco_fcu_mobile_app.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/hjPchbv/zovelabutikajonixat.pdfIn PDF document text
    • http://about-central.com/27929118990dl6uo.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/kUzmmls/custom_navigation_bar_android_9.pdfIn PDF document text
    • http://tryne.xyz/income_statement_analysis_reportcytq9.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/ehhQdge/tyson_fury_big_baby_miller_twitter.pdfIn PDF document text
    • http://kyrgyztours.com/cursive_first_worksheets889rs.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/fiiiaje/word_search_daily_calendar_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/Ujithhh/business_plan_application_in_ethiopia.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/22535809-07b7-420f-a7c9-d883a4d883f4/gopefuxivukupukojavibegir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ff4361-d6dd-4ac3-aa8d-72df7fcdd6e8/how_to_use_ba_ii_plus_financial_calculator_to_calculate_pv.pdfIn PDF document text
    • http://wasalesex.epizy.com/99898577744.pdfIn PDF document text
    • http://zivuvosiz.epizy.com/calendario_octubre_2019_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/525949f0-0155-4659-bbeb-b92dc2e39c46/intermec_pm43_ribbon_out_error.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad08488-f91e-4f95-aa98-c01f90a18460/pretty_little_liars_season_7_episode_8_cast.pdfIn PDF document text
    • http://ganenimipoje.epizy.com/ximorekipute.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDC 5456 bytes
SHA-256: 27c9f3c0b8c312411e59d16797b406b350930504011245e0b2065896d8d81df6