Malicious PDF — malware analysis report

Static analysis result for SHA-256 574fa2c02d02c655…

MALICIOUS

PDF

73.1 KB Created: 2021-02-15 10:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9dfd7abd677c892ac6a90bfaad19dfb4 SHA-1: 2befc1b659b6bdf9397ad9037ddf3cf7c41ad5a6 SHA-256: 574fa2c02d02c655574cb443686e09638b7b3c13851e6aa38f01dca681c327a4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wix?keyword=boom+beach+unlimited+diamonds+apk+download In PDF document text
    • http://milanomoda-italy.site/conservation_biology_books_freedyyns.pdfIn PDF document text
    • http://topvideo.design/gabriel_s_oboe_sheet_music_imslp792x9.pdfIn PDF document text
    • http://chempion.coffee/vovefusazigorineoork2.pdfIn PDF document text
    • http://becloud.website/quesadas_el_gran_pasiegodqt5e.pdfIn PDF document text
    • http://avbox.org/motion_typography_template_free537zr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421764/normal_5fe788114409b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fc961bbcb43b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_602036c89ca04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388283/normal_5fc68604a7a01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_6011df5377069.pdfIn PDF document text
    • http://cashbackmoney.info/let_s_go_planetshakers_lyrics_genius5i0ih.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vagimosaperijoz.epizy.com/57135467808.pdfIn PDF document text
    • http://sesugemedolaf.rf.gd/staples_8_large-_tab_dividers_template.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_off0000e15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15D 5560 bytes
SHA-256: 1607cf8981e402e306d07b0fd6a20b123707630199e1c6b86fc7037489f9c11a
font_01_sfnt_off0000f42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 10240 bytes
SHA-256: 9e0efa29ce35113d9d40f9e04109febfded3ae450e572c43f98a1f79189b612b