Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7461d07f26771f…

MALICIOUS

PDF

70.9 KB Created: 2021-02-19 09:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72f529db789da9fe1096e860e85fe507 SHA-1: 80396559f62babc520c86781dac4f172ce312e3b SHA-256: aa7461d07f26771fdc1b80a9390071feddb59940f578316e10edfcaf9fa25ff0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=presidential+book+of+secrets+page+47 In PDF document text
    • http://zerkalo-fugicar.website/how_high_should_a_11_year_old_jump0dmcs.pdfIn PDF document text
    • http://rijazozetofovi.22web.org/xolatedav.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwuzuwix/gib8L0J/nuzugop.pdfIn PDF document text
    • https://cdn.sqhk.co/kitatoze/VQEq1je/jizobulukipige.pdfIn PDF document text
    • http://itsnat.space/how_many_carbs_in_a_taco_bell_hard_taco_supreme9rzvg.pdfIn PDF document text
    • http://coolstudent.space/voyage_of_despair_clocks_guide43a1v.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/jjUuEje/50023126193.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisuvov/hbgje5Q/shooter_jennings_song_in_walk_the_line.pdfIn PDF document text
    • https://cdn.sqhk.co/bogabixexuja/haUgfij/dasur.pdfIn PDF document text
    • http://mangalvpodarok.ru/72518596949jdzda.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/dhfgdu1/jemujetusagiza.pdfIn PDF document text
    • http://domastmsk.space/79129590476lc3ln.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/iLAgiVO/my_football_games_soccer_heads_championship.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/aLhejgI/musuriratiravixafuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/eoTqgcq/smart_update_manager_8._4._5_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/jjmCJjg/buxageduguwuxipalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jenuvuzawo.epizy.com/blank_resume_template.pdfIn PDF document text
    • http://kabexumowexugu.epizy.com/evaluating_factorials_worksheet_answers.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_off0000d21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21F 5696 bytes
SHA-256: 205db7221a760ab5b0c04425973e4690bf7d7acd12f44b019ec653760beaf180
font_01_sfnt_off0000e5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A2 12820 bytes
SHA-256: 767d309d33c3f2a05aa307a483a9967b6bb869165b98ed888bb048a9caf0663e

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