Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ff1c46c9f253e4…

MALICIOUS

PDF

69.3 KB Created: 2020-10-03 05:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 54084dde51f1936c418ea64304169ec8 SHA-1: e67bf90fd2ff59ef5982e43ed2e78819daac6d95 SHA-256: f9ff1c46c9f253e4cd0c42424ffdd4e7fb2ea89c7f4ff21abed84766b9872d06
132 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/strik?keyword=punjab+college+admission+form+2019 In PDF document text
    • https://site-1039226.mozfiles.com/files/1039226/fazevarego.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/67633274415.pdfIn PDF document text
    • https://site-1039775.mozfiles.com/files/1039775/dagitovesuwilijurun.pdfIn PDF document text
    • https://site-1039948.mozfiles.com/files/1039948/23027166064.pdfIn PDF document text
    • https://site-1037175.mozfiles.com/files/1037175/bujejegezipulileligani.pdfIn PDF document text
    • https://site-1037237.mozfiles.com/files/1037237/47450535984.pdfIn PDF document text
    • https://site-1036697.mozfiles.com/files/1036697/visuvedokewizaviku.pdfIn PDF document text
    • http://files.wardensworld.com/uploads/1/3/0/9/130969645/6385584.pdfIn PDF document text
    • http://totezemu.communityofstbridget.org/uploads/1/3/0/7/130775280/ganekabujuvavilosawa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7340/0732/files/hp_pavilion_x360_pen_best_buy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8687/6324/files/metodo_konmari_download.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_off0000d1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A0 6040 bytes
SHA-256: 198215e586bd17b52f664c160049f64db495cd6e69ed88091f847fac7fbf0db0
font_01_sfnt_off0000e61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61C 10148 bytes
SHA-256: 60b7555903323a54ff664d65885c3583dc3140e9fb67f699df233ece3c0062d2