Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a05d15550405c1…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 23:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b8cd7b6dd9bc873130ce1c3f5b96974f SHA-1: aab88a3bb14190309bebef43467dc4945447bb20 SHA-256: 54a05d15550405c1413b574b3dfa59c76e2ac317a8510bb3de4b0c56b9e4fcc6
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=cobra+29+nw+ltd+classic+troubleshooting PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377931/normal_602f58f0e7fec.pdfIn PDF document text
    • https://kepinofex.weebly.com/uploads/1/3/4/0/134017679/6084012.pdfIn PDF document text
    • http://medtechnika1.ru/79942016400bkxlv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471686/normal_602520f03d10f.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/eijLhc1/2633846543.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/WMVjgjh/66194110091.pdfIn PDF document text
    • http://littlenat.space/zoxavosuwibeti04kyw.pdfIn PDF document text
    • http://golobupovi.22web.org/bmr_full_form_in_refrigerator.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoletef/Iib0jul/vesezezoxebozexagafukifo.pdfIn PDF document text
    • http://sipamuxagiporen.iblogger.org/modern_calligraphy_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_6010f448cc092.pdfIn PDF document text
    • http://creditscoretracking.info/31205001430jw7ui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491936/normal_5fff32d4817b0.pdfIn PDF document text
    • http://dolanuja.iblogger.org/37098688988.pdfIn PDF document text
    • http://barashik.space/how_to_do_self_cognitive_behavioural_therapygjt9v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://durunorutap.epizy.com/ms_access_2003_database_examples_free.pdfIn PDF document text
    • http://jalasofumikom.rf.gd/34415230451.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.

FilenameKindSourceSize
font_00_sfnt_off0000dea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 5624 bytes
SHA-256: 67bf2a0cb89f0be302d6846073f17336d71e1f4bddbe5ce4b306be273ac371e3
font_01_sfnt_off0000f1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C8 10724 bytes
SHA-256: a367bdde83030f2605552e1dc678378826f278a7780d45c09669436a4134269b