Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae28eda2794b250a…

MALICIOUS

PDF

74.1 KB Created: 2021-02-15 19:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 9ebdcc446b5914be97e5ecdb66cc0034 SHA-1: d18d987e52986ada4cd3424cd12f87154031d788 SHA-256: ae28eda2794b250a283c29b8080ec9541147a40a133d8bfba2b8be63ac7590fb
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'wiiflow without sd card', directing users to a potentially malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=wiiflow+without+sd+card PDF link annotation
    • http://resimpub.com/wigufiwibulepejuxabafdfg2.pdfIn PDF document text
    • https://cdn.sqhk.co/nuleneru/gjieFgi/djay_dj_app_mixer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/e08igg8/nemofamefosubuzubo.pdfIn PDF document text
    • http://tigesonepovar.66ghz.com/66951878033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_6021995fc576b.pdfIn PDF document text
    • http://krym.today/61182198069uzmgp.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/Bfiijjb/caregivers_for_seniors_pa.pdfIn PDF document text
    • https://cdn.sqhk.co/sagitusat/IieaYhc/xikatokunowawomadifedewe.pdfIn PDF document text
    • http://vuvepexuja.22web.org/landing_page_wordpress_templates_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/8W2Fm8F/airplane_clipart_images.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405642/normal_5fed01cb4b6d3.pdfIn PDF document text
    • http://wersita.fun/peliculas_de_barbie_completas_en_espaol_listaz3rbh.pdfIn PDF document text
    • https://cdn.sqhk.co/zedawuzijis/ejaghQI/bejuxiwogobijetuzonukufe.pdfIn PDF document text
    • https://cdn.sqhk.co/bepasasa/5giNMhc/veduliwijumutufele.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuponefi/70565759652.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/43165400795.pdfIn PDF document text
    • http://lenobarokolubik.epizy.com/sanigopigezibogaluda.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/ballykissangel_season_6_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/balls_bounce_puzzle_mod_apk.pdfIn PDF document text
    • http://wutewak.rf.gd/noradadifupibuzavazelof.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_off0000e4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 5212 bytes
SHA-256: d5e3920e6d1b344e600cc30853a60524cb3d6bc5ca5ead5251bd22101ca40cf2
font_01_sfnt_off0000f6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AD 10704 bytes
SHA-256: cb277027fe3ba26a6beaa9ecad7e1235635c940083595f93514bd2003814131b

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