Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9af7dadb0255f9c…

MALICIOUS

PDF

34.3 KB Created: 2020-11-09 00:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: d7c1095e66515951ea25ce5b45580930 SHA-1: 07c679ace6fc8fce46d929751a1d684cd918e962 SHA-256: e9af7dadb0255f9cd768ce40d970ce2b005f87adc376538fc030bf83ebb74ed7
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=dreamweaver+the+missing+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4428054/normal_5f9b0f43d5b47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388596/normal_5f9139cd3ddd2.pdfIn PDF document text
    • https://fineruliji.weebly.com/uploads/1/3/4/3/134313455/37a776.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/wudebapiw.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/0d8016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://saridejawe.files.wordpress.com/2020/11/mupinakekasepibumejo.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/kaizoku_sentai_gokaiger_episode_1.pdfIn PDF document text
    • https://jumegufij.files.wordpress.com/2020/11/depressing_backgrounds_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/17869532801.pdfIn PDF document text
    • https://wixisodek.files.wordpress.com/2020/11/mafali.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_off000044c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44C6 5608 bytes
SHA-256: 26da53a686c945480e92d7271bdd95351078972cd176df549ca6b0d736b31907
font_01_sfnt_off000057cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57CC 10320 bytes
SHA-256: 766798b42e0b77b330c02c3d0fe68e659035238e31c907bf4173b5139922119c