Malicious PDF — malware analysis report

Static analysis result for SHA-256 9307b128527fdf8d…

MALICIOUS

PDF

72.4 KB Created: 2021-01-10 21:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 9ce07e9144cbeafce065258d51916447 SHA-1: 305dfb7ce7b110076045f4bbb188c33b7aea95f8 SHA-256: 9307b128527fdf8de8386c7b13e7956fceccc391a89ba7f7471a473495bc5965
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffset.ru/shook?utm_term=%25D1%2581%25D0%25BC%25D0%25BE%25D1%2582%25D1%2580%25D0%25B5%25D1%2582%25D1%258C+%25D0%25BD%25D0%25BE%25D0%25B2%25D1%258B%25D0%25B5+%25D1%2584%25D0%25B8%25D0%25BB%25D1%258C%25D0%25BC%25D1%258B+%25D0%25BF%25D1%2580%25D0%25BE+%25D0%25B2%25D0%25BE%25D0%25B9%25D0%25BD%25D1%2583+2020+%25D0%25B3%25D0%25BE%25D0%25B4%25D0%25B0 PDF link annotation
    • https://cdn.sqhk.co/kulizuxekume/ih5oFyS/lodasiwajutudirufetogo.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/i0phfgg/fall_guys_game_ps4_free.pdfIn PDF document text
    • https://site-1175456.mozfiles.com/files/1175456/evil_nurse_scary_horror_game_adventure_online.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/5AdDNja/45583490901.pdfIn PDF document text
    • https://site-1168308.mozfiles.com/files/1168308/maharashtra_state_board_10th_std_digest_2020.pdfIn PDF document text
    • https://wizenifove.weebly.com/uploads/1/3/4/3/134308138/4138196.pdfIn PDF document text
    • https://site-1172409.mozfiles.com/files/1172409/rajasuvi.pdfIn PDF document text
    • https://site-1203447.mozfiles.com/files/1203447/5336040665.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/gowaw.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/im8jejj/promo_game_free_fire_max.pdfIn PDF document text
    • https://cdn.sqhk.co/taduzotul/Rigpgje/word_nut_level_862.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/sazomo/safety_corrective_action_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/notepad_mac_os.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/ajax_file_upload_jquery_example_without_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/honda_cx500_manual.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_off0000d0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F7 6344 bytes
SHA-256: 3ac27b7ac799aa8e1d12fd0f4d2a474e242535d2a90532b4a7dfe7cc32b0a638
font_01_sfnt_off0000e568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE568 14224 bytes
SHA-256: d598cdfb92f248b442568640cb2cf1ca73c11c4241c2a8fc5c6d09e830c18c2d

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