Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4cd1c820e55831…

MALICIOUS

PDF

65.0 KB Created: 2020-10-17 02:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: bc9b23088a529350f2a83cc9056c90ae SHA-1: 62b4c2fffcda194584c2242fb9c3173a14536c81 SHA-256: 7e4cd1c820e558312de81bdc3d6ad98d440077132e1ad6dd4c8b888bb91fea43
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/123?keyword=tesis+sobre+alimentos+transgenicos+pdf In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fesixukorupu.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/zezozoputubiwa.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/f9007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f89b2357104d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f89b471cba25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87041fb1b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f873f887adab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_5f8a231a46a56.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/laxojajigoluv.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/2018877.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/eceaff40ded6.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/8e2200d9190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8a1b6f4b138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f87503d945ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f870e706edae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f87cba379cbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f8a17d1f0f86.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/1/0438/0714/6146/files/wintercroft_masks_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0346/0770/files/how_to_repair_enchanted_sword.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dcd064e-2861-48f4-a7d5-f107f68a0af1/34168537463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b677b9-b048-4cba-84fb-4c268da4fa93/62432645536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/159f029d-3f3d-4973-b163-dd05e7f1f583/sadir.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_off0000bc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC71 5564 bytes
SHA-256: 20d6991777e1dfc4ea1ed7753266c4a2a41beaa866f14419759430f2b015f8eb
font_01_sfnt_off0000cf3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3F 11512 bytes
SHA-256: 0d896602710f3dad360a1e98d78a749dc2e55765f1fc55c318fba8dd9f53ce37