Malicious PDF — malware analysis report

Static analysis result for SHA-256 f603f4745447806f…

MALICIOUS

PDF

49.5 KB Created: 2020-10-24 18:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 7a1b782a15cf13a1ebfb7b0f6fe7a91e SHA-1: 660662b5074ca431c948e77880c4d16cb936836f SHA-256: f603f4745447806ff746187890464718b43a175891e1bffe73e48874f0c92e73
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/aws?keyword=circle+equation+notes+pdf In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/f644c1c2d58ab6d.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/sosepazikodo-tolakilapagapoz-xuzukunixi.pdfIn PDF document text
    • https://besogedawifajop.weebly.com/uploads/1/3/4/2/134234635/0167c14f9.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5f8c1f497cac3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5f91e7792ce83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f8a2279407b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387709/normal_5f8ea23241a13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5f8be18e45392.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/c22a677e86113b.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/kugedunaxosasot.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/munulutaripu-fumuxasonexivej-busakugesadut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/75447861-962f-430f-81b5-9b77b09f20cb/mafod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06540b2e-aedd-4713-9df3-5354d69d5ce6/tolixifemelaxami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cdb73c7-ba3d-44fa-a542-3dd139ac872c/true_power_of_hydrogen_peroxide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066d862c-9227-48fa-8513-78e09719a225/nirox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2e432b-8abe-483f-9525-db18b6f18933/husqvarna_262xp_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627ae3a0-e40f-413d-8f16-bcfadd9ba510/75948897657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/182b1792-cf15-43c1-8c19-35126f321af8/vivaparakedutojub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5843/0106/files/usps_drug_test_consent_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0575/8618/files/fudisag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9231/9650/files/econ_304_final_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7498/9479/files/55438895610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/automating_inequality_virginia_eubanks.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_off00007dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC5 5180 bytes
SHA-256: f469b68bc6484706576cfce628371d267e37e1ecf3b7dac1484a45763202193e
font_01_sfnt_off00008f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 12240 bytes
SHA-256: 85dadae1f366261f2ea42783a22800d070b8cd1375442e7f2f6bfb988763c3b2