Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e589c905d3f88a5…

MALICIOUS

PDF

73.2 KB Created: 2021-02-15 15:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 84a925fec2ab9ef8772a73c026a8e9e8 SHA-1: 24bb08da3a5d2f948daee3e0c125dd51fd97e0ff SHA-256: 9e589c905d3f88a51594beb85179da6a0a4a9abd79aaa5e1aaaf8a01cc4d1048
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=nba+2k18+apk+android+7.0 In PDF document text
    • https://cdn.sqhk.co/negapevu/Gghhe6p/74000557028.pdfIn PDF document text
    • http://masterpowerpoint.com/screen_recorder_ipad_free47q32.pdfIn PDF document text
    • https://cdn.sqhk.co/lobitukojuro/agighE6/the_mummy_returns_imdb_parents_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fecd00473a44.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/jb0jcij/shudder_meaning_into_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/hcJjchf/33367880676.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/Mjcskih/spiral_sliced_ham_on_pellet_grill.pdfIn PDF document text
    • http://lajulufubugo.22web.org/julugidotimemal.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/hjhemYJ/biisuke_ball_adventure_2.pdfIn PDF document text
    • http://pibalefiw.22web.org/59039698690.pdfIn PDF document text
    • http://zalavovira.22web.org/93039850972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496193/normal_601f0deeca199.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487424/normal_5ff5430f0c909.pdfIn PDF document text
    • https://cdn.sqhk.co/sadoburola/i2gjidQ/text_message_noise_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/je39khe/spray_tie_dye_kit_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/c4ShdFN/missing_persons_database.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/jeggihf/lolerenovikaku.pdfIn PDF document text
    • http://volosaty100.xyz/xigobivikm01tk.pdfIn PDF document text
    • https://cdn.sqhk.co/fifenije/iekWggy/95060565607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464863/normal_5fd2567665d13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_5fe9dc7ab3e4a.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxobilan/cHji2Ej/best_bridal_makeup_artist_near_me_with_price.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE234 5548 bytes
SHA-256: b0908f57e5ceba1afbbd74eb732a32c95220e40710659ec8da07ffed05ac25b3
font_01_sfnt_off0000f539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF539 10048 bytes
SHA-256: a778985e6b81e5833fd041dd6f44e64420dec614e1611c590b7512213a34c0cd