Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66c3083acaa8897…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 13:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 60e3d68a2cce32ce317f0f0617023e55 SHA-1: 65b05563d034e91661a08b5fdc866df2db98b2c2 SHA-256: d66c3083acaa889799e7b15780935efa765dd6bb039fd42ec54d25908d87f49b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/wix?keyword=unblocked+games+at+66+ez PDF link annotation
    • https://cdn.sqhk.co/dafisuwikib/sifihjJ/emoji_art_copy_and_paste_among_us.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5fdd07a1c46f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454179/normal_5fe1755f7ec29.pdfIn PDF document text
    • http://relax35.ru/massachusetts_wildlife_magazineqoq2p.pdfIn PDF document text
    • http://noverst.xyz/13831269043ip90g.pdfIn PDF document text
    • http://revershjtb.site/federalist_paper_78_questions_and_answerskex7q.pdfIn PDF document text
    • http://creditscorerepair.info/89335668100sq8yx.pdfIn PDF document text
    • http://nebo-baikala.ru/titanadepidaflc.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/beFib1C/pulse_oximeter_readings_chart_covid.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/geYibsE/bubbles_bubble_shooter_download.pdfIn PDF document text
    • http://limecash.xyz/cheat_sheet_meaning_dictionary19h4n.pdfIn PDF document text
    • http://buytoday.cc/445403096107ksw4.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/iHdhhjd/a_street_cat_s_tale_support_edition_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://levemenadipiwo.epizy.com/online_invitation_card_maker_free.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_off0000df45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF45 5560 bytes
SHA-256: d92aa64f9321e8068cef78f1c267530b995e72d536875d7b947f9a874040eb4c
font_01_sfnt_off0000f22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 10180 bytes
SHA-256: 0cc9103cc1a7b802b893eba9c99ef53d241b4638bac8e7501dc27a2f104b40ff