Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2f744a0dea012c…

MALICIOUS

PDF

76.6 KB Created: 2021-01-24 02:09:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 4226636d180477e26bccc70994816bb0 SHA-1: a03c5d559bf70b76484ee2b741ddb7d92e5ea943 SHA-256: 0e2f744a0dea012cacfc7019c805594000c2a36e81b48eb02868e1d927ffc48b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary one pointing to 'maypoin.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm on disposable hosting, reinforcing the malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/123?utm_term=100+percent+complete+gta+5 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419235/normal_60011e8a43765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475997/normal_5feaefac0fd27.pdfIn PDF document text
    • https://site-1176216.mozfiles.com/files/1176216/58691347180.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/3754079493.pdfIn PDF document text
    • http://bupomorefa.22web.org/fetogilawofi.pdfIn PDF document text
    • https://site-1174826.mozfiles.com/files/1174826/cowboy_candy_dip_recipe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406514/normal_5ffe71f05f192.pdfIn PDF document text
    • https://site-1175983.mozfiles.com/files/1175983/likenazepubomafilugogad.pdfIn PDF document text
    • https://site-1173894.mozfiles.com/files/1173894/skyblock_roblox_hack_script.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_5fd81cb3bc6f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481278/normal_60047adc5a3c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388598/normal_5fe9da5cc4b0d.pdfIn PDF document text
    • https://site-1178182.mozfiles.com/files/1178182/endotoxins_structure_function_and_recognition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemuvubovewe.epizy.com/vidmate_app_all_video.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/canon_large_format_printer_ipf770.pdfIn PDF document text
    • http://sazosubegus.epizy.com/depeche_mode_playing_the_angel_album.pdfIn PDF document text
    • http://gewapapis.epizy.com/date_format_linux_c.pdfIn PDF document text
    • http://kovejenipo.epizy.com/hiking_guide_malaysia.pdfIn PDF document text
    • http://darewuxopasog.rf.gd/video_games_list_free.pdfIn PDF document text
    • http://mapexas.epizy.com/meterpreter_android_persistence.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_off0000e8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F4 5296 bytes
SHA-256: 59acb69778bbc4fff019c5d52dd580b3399c981052608b6bc52a05436d5991cd
font_01_sfnt_off0000faed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAED 13844 bytes
SHA-256: e97328f83cc7ca4ee9defbb918297c8e9728c535ab94b9f8fa181e19e352b680

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