Malicious PDF — malware analysis report

Static analysis result for SHA-256 893a3b4049f4e5fd…

MALICIOUS

PDF

46.7 KB Created: 2020-10-15 09:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 85bbebd5e0a715b9cffdf0c542e7ec27 SHA-1: 409bedef1ab5840fa4069a9f6c7138b4393525d0 SHA-256: 893a3b4049f4e5fdfb1d918a52f25d63b80e577a1603b683ff4dae7dffb207f7
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=apple+wireless+keyboard+for+ipad+instructions In PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/nuwup-dimavopujuduko-lifinifosepu-vugenejabadan.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/2065696.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/lituxi.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/jetugapop.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/5c156d7c21e74f.pdfIn PDF document text
    • https://site-1038321.mozfiles.com/files/1038321/19273425713.pdfIn PDF document text
    • https://site-1042976.mozfiles.com/files/1042976/tipemetumibenag.pdfIn PDF document text
    • https://site-1037856.mozfiles.com/files/1037856/12188616169.pdfIn PDF document text
    • https://site-1036761.mozfiles.com/files/1036761/jesonuvobupovoduzobajolo.pdfIn PDF document text
    • https://site-1039278.mozfiles.com/files/1039278/connect_bluetooth_keyboard_to_android_tv_box.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/36d7a8276c.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/712e5af8a.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/6848636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f870394e5b2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f876794a5374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f86fc0258a7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f87464022b47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f87138a260a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f87106d9181e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87afb66d0f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871bf4aae16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f87684ecf762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f871a1a00bce.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/1/0433/4298/7422/files/unarmored_movement_improvement_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/cognitive_speech_therapy_goals_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3001/9780/files/57996230396.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_off00006935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6935 5416 bytes
SHA-256: aa093709c8af719b5e1c43926f0241708d221182a1b54d297c22f9177e2d46b3
font_01_sfnt_off00007bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB6 10256 bytes
SHA-256: f5ccbe92656f798666f1b20c1d792063f527414d1cec86981b87f97fcad27f12
font_02_sfnt_off00009e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3