Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2561251e7c5d4f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-13 21:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b0eca34b8e7e8df2317abe566ea24d62 SHA-1: 5070d30ce7ac13136ecb96cb64c439e404116aa5 SHA-256: ff2561251e7c5d4f07a5ce3e9b0b5e7de267c53a02bc9dc9abc072f947413511
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wb?keyword=esma%20guidelines%20suitability%202012 PDF link annotation
    • https://ganokupojedozo.weebly.com/uploads/1/3/4/8/134890080/a926b.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/laturezcc9x.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/1251645695de2bj.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/jhNicjb/20850815215.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/3U1zzge/snake_hd_wallpaper_cave.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/cPghbkd/fomimakakebidodeja.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/ranijefojos.pdfIn PDF document text
    • https://kepiloxuxamife.weebly.com/uploads/1/3/0/7/130740378/e6dcde2481.pdfIn PDF document text
    • http://cooldomen.space/instructional_coaching_log_template9o6b8.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/f3gc4n6/ftd_coupon_code_october_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/ahb6jis/89823311227.pdfIn PDF document text
    • http://hookup668.site/cg_song_video_hd_freeq8toi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://finabijilovob.rf.gd/bipasha_basu_sawan_aaya_hai_song.pdfIn PDF document text
    • http://gatakokuto.rf.gd/html_calendar_template_code_free.pdfIn PDF document text
    • http://pubamawuxa.epizy.com/biodiversity_loss.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_off0000e1fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FC 5572 bytes
SHA-256: 5e2c1bd06da8ff6b6a3bfff2bdd37dab193bd3b6bf6f4ad86c5ad7e73af45063
font_01_sfnt_off0000f4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E7 10056 bytes
SHA-256: 3aeabc6adf3cbbe558bef1e078aea93d6df5dd8f509f3b29158488c3389660de