Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7a9414840c2536…

MALICIOUS

PDF

45.7 KB Created: 2020-10-17 19:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e07f4c99702e891e50c1401be196bb32 SHA-1: a02ce0441c952b51b47682acafbdc5283045fe5d SHA-256: 4e7a9414840c25363ed6d905bda9a1a6e7df31840cbf32993d14e7908c5bb941
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/123?keyword=law+practice+manual+ipcc In PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/wajibe-wixud.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kinufijozulof.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/zefonanuxo.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/b8a7b22de405.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368996/normal_5f878f6b4f536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f8ae873c6ff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f87a3ed1b17e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f894e29ae9a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f8b18becfe8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f877bb9969c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f89c5dcaf72a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8aa0c2be7a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f88fbd15eed4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/maplestory_ark_guide_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1941/1878/files/r_and_s_configuration_organic_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/jefferson_county_clerk_and_recorder_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2548/8791/files/tigowetetur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/magomebefurogagasisadexuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7572/1633/files/fumavadijotajul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae4ae001-d66c-42ce-b748-ea9e1b1165de/kipibanigigexomezaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff4360a-983e-46ee-a147-e1553ad13970/gokemazet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d34fdb-d082-4e3d-80aa-8861b28ec7f8/mikagikimeduwugi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 4704 bytes
SHA-256: cdcca0109ad6fdaf3570dccbe997101aefa90794fbc28cdeaa6e163805d0b6a0
font_01_sfnt_off0000798e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798E 9800 bytes
SHA-256: ac4006bc5f35a22ca79d80658b42920c3d9cbba72be4f42455926842c1c3daf7
font_02_sfnt_off00009b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361