Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b19d09f0bea47e5…

MALICIOUS

PDF

73.0 KB Created: 2021-02-11 08:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 06478f31b32d09b7a422593749cea4f3 SHA-1: 18e8a9056d2413d38a98d739423f6a95276c7864 SHA-256: 5b19d09f0bea47e5f3ed48bdec58ae84c99acaca38a6457649fd4e90a82e678c
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/wb?keyword=video%20editor%20music%20cut%20no%20crop In PDF document text
    • http://nely.xyz/broken_bow_oklahoma_fishing_report6n3w2.pdfIn PDF document text
    • https://cdn.sqhk.co/tojofelekob/MohjCym/archery_screen_shooting_near_me.pdfIn PDF document text
    • http://magnitoli-2ekran.site/pasomemukuzapizimero42y.pdfIn PDF document text
    • http://centerbluebadge.com/mugoxuvibank962z.pdfIn PDF document text
    • http://proflist-briansk.ru/expertopup_recharge_programkc18r.pdfIn PDF document text
    • http://alcexpress1.xyz/slope_intercept_form_to_point_slope_formb9qmz.pdfIn PDF document text
    • http://hookup757.fun/software_agreement_contractb0jr8.pdfIn PDF document text
    • http://rezltml.xyz/vintage_wooden_chinese_checkers_boardqryaq.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/29Wqnge/living_room_sofa_decoration.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/kuboki/80764992477.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/darar_bhojpuri_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/chopping_board_color_coding.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/cover_letter_block_format_spacing.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/jipopomovanusuxojewoxuj.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/kashi_kannada_movie_audio_song.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_off0000e39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39F 4944 bytes
SHA-256: 039f5e826f47c7d6fc14a473ac61de9a6aea62a6784ca352f52dfbe4bd8db646
font_01_sfnt_off0000f45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45E 10160 bytes
SHA-256: fdc1cf5c4db96e30d03edbfc4628d3a29491104462cec4fb5163c51e74e673b8