Malicious PDF — malware analysis report

Static analysis result for SHA-256 2540a3af876dab8a…

MALICIOUS

PDF

71.2 KB Created: 2021-03-02 02:26:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 09480bb01a244cda1ce82caf35a28659 SHA-1: 27f90918c6b8e770c593127857a520d469cb6835 SHA-256: 2540a3af876dab8a01a1c7abc4eeda2f798ff3c49e2732f7920152715b709faf
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=maple+chase+thermostat+manual+9420 PDF link annotation
    • https://cdn.sqhk.co/napumefu/iiIfj1D/jaipur_fm_radio_stations_online.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/hgBjiWR/81050815894.pdfIn PDF document text
    • http://voicebftyi.com/733668257542jnth.pdfIn PDF document text
    • http://ig-objectionform.com/korg_poly_61_manualed4mr.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/gR1Llij/gavugatajadatowim.pdfIn PDF document text
    • http://xilatotes.sportsontheweb.net/international_mail_tracking_germany.pdfIn PDF document text
    • https://cdn.sqhk.co/xoraxuvonaf/hbmjVrX/standoff_multiplayer_mod_apk.pdfIn PDF document text
    • http://workmonster.net/tbd_full_form_in_sports7564n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388065/normal_5fc92f6657a00.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/78864700081.pdfIn PDF document text
    • http://yewes.fun/tumblr_quotes_short_deepigba8.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/hdggTib/83318032338.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/ielts_advantage_reading_book.pdfIn PDF document text
    • http://foxukekamusun.onlinewebshop.net/76801271659.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/pulobifenopojubijuvar.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/duraflame_electric_fireplace_replacement_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/mclean_borderline_personality_disorder.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/wen_56200i_2000_watt_inverter_generator_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/tangled_songs_video.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/oedipus_rex_movie_2008_trailer.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_off0000d837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD837 5696 bytes
SHA-256: 9cf877dbc86d7d8cb4303c1dbe6d112f4799aa0de8cfafca920372d52c19b657
font_01_sfnt_off0000eb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB72 10696 bytes
SHA-256: c378e4cea2b8a03aff979c1428f155b9cdc48ae231ba8803917e44d8c78cacdd

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