Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9f9886c75ed750…

MALICIOUS

PDF

73.1 KB Created: 2021-01-26 04:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c3894733b0e68f80536f85428d8f2a6 SHA-1: 20a34a31e470971ec4ee2bae9c6275f6313b065f SHA-256: 9a9f9886c75ed750274828cb0f9cb72ac54c6efbd925126d033c59a041a63668
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wb?keyword=this%20is%20the%20police%20ps4%20cheats In PDF document text
    • http://misitaka.iblogger.org/tefogilulexufatusakitod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5fdb1bb5ace0c.pdfIn PDF document text
    • http://sazaleve.22web.org/4041472472.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/p4hjRha/super_helix_alphabet.pdfIn PDF document text
    • http://amst-watch-v2.club/the_sinner_horror_pc_game_downloadktcz2.pdfIn PDF document text
    • http://sluzhba1.net/cash_n_go_near_melssal.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/nAmjdjh/26132143374.pdfIn PDF document text
    • https://rilulukopidu.weebly.com/uploads/1/3/5/3/135323077/gilabosuge-meforo-tutivoxi-toxikununu.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/hbJRfhd/wordscapes_level_8534.pdfIn PDF document text
    • http://zoom-omsk.ru/sinakapedjeu0.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/vuxalirudidel/negritude_in_music.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/twisted_treeline_ranked_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/android_10_samsung_s9_beta.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/27831150456.pdfIn PDF document text
    • http://dikewovob.epizy.com/shinchan_status_video_free.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_off0000e3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DD 4960 bytes
SHA-256: 90a669245ef1c3abce38bfb257385c1749626c4a1488adf8e8da3fa11e604d12
font_01_sfnt_off0000f4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C0 10144 bytes
SHA-256: 38e208c2441370c3521cd8597c4c31d78daa8e57829e44bd0599d26761ed4e44