Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f784ca8fcc0a8f…

MALICIOUS

PDF

45.0 KB Created: 2020-11-07 15:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c47fd5f6b182e6831f6269796e0d8799 SHA-1: 262cfba1c2e14a0a902840ebe5d41de5ab166c47 SHA-256: f5f784ca8fcc0a8fbc641ca2a52ce5c2161264a24e1e7620a9ce29fc2d4f831a
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://traffmen.ru/123?keyword=ranch+n+craft+minecraft+server+ip In PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/2326308.pdfIn PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/vukolumegu_sawuluvuxipu_lesakinetap.pdfIn PDF document text
    • https://kizozejibudi.weebly.com/uploads/1/3/4/4/134460324/putifakusizo.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/653129.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/kufuzijatikuxezigofi.pdfIn PDF document text
    • https://bepikasubezitix.weebly.com/uploads/1/3/4/3/134325559/8634a491db679.pdfIn PDF document text
    • https://gavawujag.weebly.com/uploads/1/3/4/3/134370084/bizewaxuwetu.pdfIn PDF document text
    • https://roxexiku.weebly.com/uploads/1/3/4/4/134445291/6230439.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://uploads.strikinglycdn.com/files/d26908a5-bd04-4a1f-ab6c-600c07460c2d/affan_waheed_height.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19e3466-fde3-446a-881e-d0f7c8a0a42a/kopitit.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/variables_in_c_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa684771-342c-4769-8566-e24ced91801e/luwemapedimodotelix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5585b2ff-a785-4f83-988f-4e6f5cf3913f/the_incredible_machine_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c257afe9-6d88-4ff5-9b0f-eb3d56082fde/77468035408.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3F 4968 bytes
SHA-256: 67cd6426a713bf91e54fb2cf94bfd64568920230c4dab56449f8ee22152140b0
font_01_sfnt_off00005df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF7 11192 bytes
SHA-256: 177e8a2c9bd2d440601066d02a58e53585c0a25b890d86d3e3198a35fc181e06
font_02_sfnt_off000083e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 16084 bytes
SHA-256: a3b8ae6cb61a975f1aaa3bdf1d75290c2750726bc6c8d8b6ec62e4e9f5cc9978
font_03_sfnt_off00009898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9898 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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