Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cfc0ede2e5c1f3…

MALICIOUS

PDF

73.9 KB Created: 2021-02-27 01:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: a4081b2a787e5862caa5fda15df6ed82 SHA-1: 8719a167620c89a69084facdb73887af157b4574 SHA-256: 09cfc0ede2e5c1f3b93ccfba263d6c00b23ee9f6c039cbb460e089877ecbbafb
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is a link farm on disposable hosting, with a high ML score for maliciousness. The embedded URL 'https://xezojetit.ru/strik?utm_term=free+willy+streaming+italiano' suggests a phishing or malware distribution lure related to streaming content. Although no scripts were explicitly extracted, the PDF structure and external links point towards a malicious intent to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=free+willy+streaming+italiano PDF link annotation
    • https://xalekosud.weebly.com/uploads/1/3/5/3/135350534/2d169.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_601a264a338f9.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/gg0j0ii/jobonakelorutezuve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387814/normal_5fca0e4fbe8f7.pdfIn PDF document text
    • https://cdn.sqhk.co/vevajewez/pFfGici/21720641446.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/hbzgc74/competition_archery_shoots_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451212/normal_6004306f42776.pdfIn PDF document text
    • https://tozuvosakum.weebly.com/uploads/1/3/4/4/134471329/sejewinazi.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/80660838204.pdfIn PDF document text
    • https://cdn.sqhk.co/gogamosujimi/YqZSJC8/25812361088.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/tureweratoforu.pdfIn PDF document text
    • https://foxujutuz.weebly.com/uploads/1/3/4/3/134348357/5849572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462736/normal_601286c736c40.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bogijexu/vuzodinuzawedonofinomow.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/gobiniwo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/best_godaddy_website_templates.pdfIn PDF document text
    • http://mupevisad.epizy.com/kasosejopogokuwafinili.pdfIn PDF document text
    • http://duwimufowewis.epizy.com/14561824622.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD590 4944 bytes
SHA-256: 9fa037ed7b85050af1303c356c9cf887a7c662753fbe7f2eb737573546cdcc30
font_01_sfnt_off0000e657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE657 11000 bytes
SHA-256: 09015682c235d1109b172c20d25b813ad08a0f06034b8565d5e0163ca0dea1f1
font_02_sfnt_off00010bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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