Malicious PDF — malware analysis report

Static analysis result for SHA-256 9288fc22fccceb4c…

MALICIOUS

PDF

46.9 KB Created: 2020-10-26 12:56:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9e07d7f21e0b8952d5b4ca3199b598c0 SHA-1: 5c521fb736194b3ce94b6b99a29bced589035e46 SHA-256: 9288fc22fccceb4c6922213c61bf0f46ecd91af477d42e8532e8a95a772f3489
184 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 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.
  • 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://ttraff.link/pify?keyword=megaman+x4+download+android In PDF document text
    • https://pitamiled.weebly.com/uploads/1/3/4/0/134098016/11470.pdfIn PDF document text
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/selepisesebag_meputogoz.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/jitiligeliju.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/1083008.pdfIn PDF document text
    • https://joleziravakejar.weebly.com/uploads/1/3/4/4/134460301/kuguw-jijagonogamoz-jokugipokimiduz.pdfIn PDF document text
    • https://nagigezivozitos.weebly.com/uploads/1/3/4/3/134340852/rixasix.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/aefb210dfc2a69.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/73d13ada62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416125/normal_5f95fbe22cab3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5f8dbddf3110a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f8cc25283447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5f93cce057013.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000736d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000736d.bin)
    • https://uploads.strikinglycdn.com/files/3316c3d9-e66e-4a6e-95d2-7b284de87b42/65123489305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f39b101-9ca7-4ff2-b60c-f5ff921aaeb5/tv_guide_on_christmas_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4355cfe9-471f-407f-9713-175889176e2f/zuragozikogukiran.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c7e98d-cb2a-4f4c-bee5-664d9011f00e/bigiduruxiliduvuzip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9222/1346/files/matuwadenaxubed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9055/2005/files/rotalign_ultra_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/attack_on_titan_2_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/watchtower_study_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1656/6964/files/microsoft_apps_apk_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/capability_approach_amartya_sen.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/cadena_de_suministro_segun_autores.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/2283457884.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 extracted file (font_00_sfnt_off0000736d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 5220 bytes
SHA-256: 34e28c2f68810a9eebd9d1753a3b0b6ed8816fd235dc977160a6578546411878
font_01_sfnt_off0000853d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853D 12660 bytes
SHA-256: e97fa1bc3aa9e7e0a5568303cfc3aa8e8c654a10effb82294bab540d5198e5ab