Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af8a69c0737460b…

MALICIOUS

PDF

44.7 KB Created: 2020-10-07 13:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dd36addbfd345fc8a1e02a9bcc3dc6c1 SHA-1: 80b77c6cd42daddfcdd92c32db384a464c90eff8 SHA-256: 6af8a69c0737460b84441373991d565245cca28bec940145bfea84f2adc8c1d1
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.club/pify?keyword=norm+referenced+assessment+pros+and+cons In PDF document text
    • http://files.tantrixbodyart.com/uploads/1/3/0/7/130776023/2100499.pdfIn PDF document text
    • http://files.sillylillybook.com/uploads/1/3/1/6/131636886/tukex.pdfIn PDF document text
    • http://venijik.mobilealabamadivorce.com/uploads/1/3/0/7/130739090/eb67dad89fe7bd0.pdfIn PDF document text
    • http://xubosuvu.yeagercentercounseling.com/uploads/1/3/1/3/131384401/duxerigevegafu-vevezewutaxofu-seruvufa.pdfIn PDF document text
    • http://files.mischiefprojections.com/uploads/1/3/1/0/131070872/porigumurajoluj_tenife_vokif.pdfIn PDF document text
    • http://files.cathpod.com/uploads/1/3/0/7/130775728/271298.pdfIn PDF document text
    • http://files.donboscoyouthincubator.net/uploads/1/3/1/6/131606321/7d511ee506cb8.pdfIn PDF document text
    • http://pefonawon.safespaceamerica.org/uploads/1/3/1/4/131438477/lubulib_zugegafevosa_fikezolefemezi_lelamifonixof.pdfIn PDF document text
    • http://files.paramosavers.org/uploads/1/3/1/4/131453384/9933635.pdfIn PDF document text
    • http://files.314actionucla.com/uploads/1/3/1/0/131070674/wanoximusotewip-zegupiwin-jusalexuwufuwo.pdfIn PDF document text
    • http://bavasu.totsandco.org/uploads/1/3/0/7/130776089/zuwir-gilatewil-sisas-fajid.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/1/0431/0866/3456/files/nm_barrel_tea_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9359/7601/files/64321828379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/wifi_kill_apk_for_pc.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_off0000708e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708E 5240 bytes
SHA-256: c08b143a8dfbf36cc97a529f7882a66d7a0aedb4d93e9e6ee10dcd831fd61fd1
font_01_sfnt_off0000824b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824B 10460 bytes
SHA-256: c065dad0d22a77855640ed4602a1efdccc28d8e338fd0f08e0d23eb713132e2f