Malicious PDF — malware analysis report

Static analysis result for SHA-256 42848edab5f77567…

MALICIOUS

PDF

70.3 KB Created: 2021-02-25 05:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8420d4501f7b5bc5fd90a5f3d4e5af10 SHA-1: d9b7f28535556f9181ec51f69f985f4ebdf353cb SHA-256: 42848edab5f77567170ca6e45ed9984066abe9f73408e26d945fce2cc9c27ad1
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://jacksth.ru/award?keyword=katha+upanishad+quotes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371266/normal_6024922a3b1da.pdfIn PDF document text
    • http://lovoravemufedoz.22web.org/taylor_swift_fearless_cd.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/cYghehc/steven_universe_song_lyrics_other_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/wabogojo/fQRPl4t/bulubepugaxitiv.pdfIn PDF document text
    • https://cdn.sqhk.co/sokodajep/aghdwhb/20414000662.pdfIn PDF document text
    • http://bonaletikireje.iblogger.org/screening_for_esophageal_varices_guidelines.pdfIn PDF document text
    • http://sajutasure.22web.org/charkha_mera_rangla_sad_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jahejcY/bird_of_paradise_indoor_plant_problems.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/gelawiweza/assure_authorization_form.pdfIn PDF document text
    • http://fenukasoroxido.epizy.com/dijiku.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/24280102422.pdfIn PDF document text
    • http://rugaroli.epizy.com/23136158676.pdfIn PDF document text
    • http://fugewep.rf.gd/xuxalipamegunip.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/95426917261.pdfIn PDF document text
    • http://zomusuxine.rf.gd/uc_browser_for_pc_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/xofurefobobaxatabogatid.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_off0000d8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AD 5016 bytes
SHA-256: e0c393f16ed707283ea625e8ec63619b7885bf802f2b3dc2e8252e45227a6238
font_01_sfnt_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 10208 bytes
SHA-256: b94242fee77472acc34f96f10023962c6bc818f5ad12ad13befa3cf87d3c0866