Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a363af1b742cffb…

MALICIOUS

PDF

67.8 KB Created: 2021-03-01 19:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6fc04e025bced74fc85e6047b12945c1 SHA-1: ceda105ae1b000487d35c6c7034133bcaf28ab39 SHA-256: 0a363af1b742cffb22506132854a6663c3edd670c648fb1f19b2a0a557d18140
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=sell+used+hydroponic+equipment In PDF document text
    • http://leqqurint.online/best_sales_management_books_2020kyol4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487903/normal_6032548cf0881.pdfIn PDF document text
    • http://parkji5x.xyz/allen_heath_zed_14_manual01knk.pdfIn PDF document text
    • http://tvoeobrazovanie.fun/kavewujuo9m6j.pdfIn PDF document text
    • http://itanah.space/pexedunizuwusubw4dnb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482858/normal_5fd64cf1b71f2.pdfIn PDF document text
    • http://foodguideblog.com/drake_straight_up_to_my_face_mp3_downloadugvtm.pdfIn PDF document text
    • http://magnetfix.store/sanskrit_vedic_books9sk3o.pdfIn PDF document text
    • http://useporte.xyz/the_night_before_christmas_poem_christian_versionfmgoq.pdfIn PDF document text
    • https://latewumopinigan.weebly.com/uploads/1/3/4/3/134313498/9216534.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jorowiwiboxizuk.rf.gd/taludixonexelosotejumifed.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/rutagidegafazuvuviruzid.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/harry_potter_games_free_download_for_pc_windows_8.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_off0000ccef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEF 5436 bytes
SHA-256: b8a9bbfce2b6dcde88953601077879723d74ace8c6ad2d8bcca839c228915311
font_01_sfnt_off0000df48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF48 10364 bytes
SHA-256: 90514b4e771004b905d90df55d2ea34b4e34179ab5fc2121cdb9365da25e8daf