Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aff0c94fd4ded7a…

MALICIOUS

PDF

67.8 KB Created: 2021-02-12 13:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 81a32ea555d2507139ea48ed447460ed SHA-1: 4c5d0224bcfb49fa3844227de1bc35053e518c3a SHA-256: 6aff0c94fd4ded7af9388f3c215fc4f4019ee89f8a2149c9af292e253cceac8d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=fnaf+sl+android+apk PDF link annotation
    • https://cdn.sqhk.co/kekelivig/8V9jjwg/nice_button_down_shirts_for_guys.pdfIn PDF document text
    • http://cosmostil.top/refactoring_ui_bookg7l4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388416/normal_5fde5bfc87719.pdfIn PDF document text
    • http://kengoru.space/92358097563rbmqv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_600d700d1c2d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409000/normal_5fcc28e7e9d68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465557/normal_5fdf7044634ac.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/ihaCygd/timokafofovonokokutuwodo.pdfIn PDF document text
    • http://myfirstsite.xyz/44533540463kch54.pdfIn PDF document text
    • http://mifvideo.space/ahsoka_tano_voreul09o.pdfIn PDF document text
    • http://alisabor.design/definicion_de_horda_gens_clan_y_tribuc1hd7.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/Qfygfhe/viral_love_funny_videos_2019_pinoy_facebook.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE2 5056 bytes
SHA-256: dc34ad35060fc4b1aa059a68afd7dcdf3812a613b51b18c4aa771190d55fc8c3
font_01_sfnt_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 10148 bytes
SHA-256: 3638fd49cd8e8e660f6c8727751fa8088bb693630bb09503ff1a92ec251199f0