Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb58bf6bf9d987a1…

MALICIOUS

PDF

43.9 KB Created: 2020-10-27 20:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 9afb1d9b7110d5c713d609a60c8edc89 SHA-1: cd67034f51f0ae007b8af8bc7b235417b5f7a6f7 SHA-256: fb58bf6bf9d987a1057014fa53bc8104128596184625f666447cb658b1a619bc
204 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=pacific+crest+trail+water+report In PDF document text
    • https://wozukofa.weebly.com/uploads/1/3/2/3/132303282/b37e69.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/4952957.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/vowuj_wiwaf_wubitenikutasuz.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/a98506bcb909a.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/zajusul_lemonoxowunab_vikosasoxekij.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/bawap.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402244/normal_5f95af30960ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f8cb15fe5d9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389601/normal_5f928a0541947.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/1/0430/9696/5269/files/twin_draft_guard_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db6a3c5-417f-4167-90e2-b139ede06912/73026940139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95777f34-c294-438e-b773-bd12f1ffc021/lupovumabusawajizis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e828aae-8300-40ff-9378-5bf02e21f958/los_hombres_lobo_de_castronegro_luna_nueva_cartas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f842010-3745-4a78-935b-b163016c9bbf/dadomuxaxonotas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c1aa000-1220-436c-9946-6707c7bfdaa9/marimivokerope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/262bd3ae-bc0e-498d-88aa-e3b5aedc8db7/50264001223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d37260e-217f-4bf8-9b7f-4d83549d7c01/71567931280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069bee59-c627-411c-bd99-8f7509bf1b55/naxutilikejebusoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3850a67d-d04d-4707-a25e-a416e2123a9a/power_auras_3._3._5.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_off00006c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 5104 bytes
SHA-256: 2104fbc081e9bc3066151742bde6803a55732899b6f026569ed8fb7640208a1b
font_01_sfnt_off00007d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81 10868 bytes
SHA-256: 8a8a309155e9fafc187af2b853c10f94808a26d8db91b7f248f2b6a1ff2b3453