Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a862540beb4be47…

MALICIOUS

PDF

50.6 KB Created: 2020-10-10 23:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 97471f674b493b47437545a0f04d0bb5 SHA-1: 678e834a814835bb8fa74e5c3e2aa3b5f5815c44 SHA-256: 8a862540beb4be476180a9c52a6c47400faadca632a8b3a458d942e9f9ba03fe
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.com/pify?keyword=john+wick+2+google+docs In PDF document text
    • http://files.customanodising.com/uploads/1/3/0/7/130738955/cd6423b0.pdfIn PDF document text
    • http://files.elizabethsaitta.com/uploads/1/3/2/8/132814305/9363077.pdfIn PDF document text
    • http://files.lovegrowscsa.com/uploads/1/3/1/4/131407493/6044760.pdfIn PDF document text
    • http://files.bellamayphotography.com/uploads/1/3/2/6/132682134/rixununoxopagukajiv.pdfIn PDF document text
    • http://terisis.easternontariowines.com/uploads/1/3/1/4/131453808/mudaredap_gexokige.pdfIn PDF document text
    • http://files.thewesleygroupfinancial.com/uploads/1/3/2/7/132712102/senavawozojozakuzad.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/dakavotiziwamezonoposoraf.pdfIn PDF document text
    • https://site-1040785.mozfiles.com/files/1040785/zonux.pdfIn PDF document text
    • https://site-1039644.mozfiles.com/files/1039644/putejomutaminaj.pdfIn PDF document text
    • http://migajaba.haggere.com/uploads/1/3/1/3/131383363/duwetivuzodule-tobigetajemoku-jexaxidododok.pdfIn PDF document text
    • http://files.thehomeconversion.com/uploads/1/3/1/3/131383456/butetexamoj-lekavidowokigu-sigiwogeno-famibuxopalewaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 4532 bytes
SHA-256: 123c329c0d536cdd46f68000695b0112901dc38026e7fe0a8e35ddbe7898aaed
font_01_sfnt_off00007129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7129 5172 bytes
SHA-256: 77a3c9d29d32dcaf170f6dbcd46b5c8136208d3dc5d46f6e71c000a2b1f43891
font_02_sfnt_off000082d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D2 10148 bytes
SHA-256: 17601b7cd46902c0a9c5605628134dd0d3078b3915f0f4cd8720002dd1dfcc5c
font_03_sfnt_off0000a5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5BE 16780 bytes
SHA-256: c3ff7cb8f5d6ef50dc669c89cd53147b75d613385fed7ef2de64637c7c7d3346