Malicious PDF — malware analysis report

Static analysis result for SHA-256 7254420be7435afa…

MALICIOUS

PDF

63.9 KB Created: 2021-02-09 04:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 51a7121e46a446cd71b50a1675215342 SHA-1: ba4dd2e8013a18a745f5d4cc208b63d897510c94 SHA-256: 7254420be7435afa6a3d20ce781b314a00072f9f7a63f88113c4bb0f4e123bf6
126 Risk Score

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://jacksth.ru/123?utm_term=fe+handbook+10+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455370/normal_6015253c6d6b3.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/61a42cf.pdfIn PDF document text
    • https://cdn.sqhk.co/moxelutedoje/hbnjjXu/73989386336.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/xetanop_mobobujofi_xanozopexi_jezevari.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369773/normal_5fcc2e0eebda4.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/Hhhie6E/ravensburger_disney_family_puzzle_500_pieces.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/ibAhdgh/16107677692.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5ff39d26c9df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fdc051fcbeb5.pdfIn PDF document text
    • https://botabire.weebly.com/uploads/1/3/4/6/134629411/2650356.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jivobolalozula.rf.gd/aaradhike_song_lyrics_malayalam.pdfIn PDF document text
    • http://kejidexod.epizy.com/xefuwimilelutavawek.pdfIn PDF document text
    • http://diverozisutujew.epizy.com/fifth_wave_book.pdfIn PDF document text
    • http://jubalagifagusop.epizy.com/kinuxuwiborevawefizorovij.pdfIn PDF document text
    • http://zetamox.epizy.com/31666041285.pdfIn PDF document text
    • http://rajamuviw.epizy.com/9315683987.pdfIn PDF document text
    • http://sojisij.epizy.com/how_to_perform_blood_money_ritual.pdfIn PDF document text
    • http://bazodumijot.rf.gd/analytic_geometry_eoct_study_guide.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_off0000bc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC61 5176 bytes
SHA-256: 39a2038e1a8acd8ce1580e64cfd56ca0323e07d45e19dee412e47e88cf77caf8
font_01_sfnt_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 10868 bytes
SHA-256: 16e1a9821086b4327214dc1845e6ea7b68ba21739274aec2b9876ca54bbbd06a