Malicious PDF — malware analysis report

Static analysis result for SHA-256 a31306ee3c637d3b…

MALICIOUS

PDF

72.8 KB Created: 2021-03-04 01:23:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3cf3ad7bc66ceee971799155ef7aff4a SHA-1: 3132acb858fbcaa82b938f46da5dcaaddb20dbe0 SHA-256: a31306ee3c637d3b16c67d418e494fe25f3de7e970197ef28c0a5e27428db5b9
126 Risk Score

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://kuzutuzo.ru/award?keyword=replace+beats+cord PDF link annotation
    • http://jedomagisuw.getenjoyment.net/rosudajiboxatokuwiritex.pdfIn PDF document text
    • http://lowabunuzoxa.getenjoyment.net/kolukapurif.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/ferozusop_megebaxulik_mopavopomalal_fofonebos.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/mass_flow_rate_formula_for_heat_exchanger.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/graco_milestone_all-in-one_car_seat_user_manual.pdfIn PDF document text
    • http://rabejagoruwobol.66ghz.com/manualidades_con_papel_arco_iris.pdfIn PDF document text
    • http://ribuvegiruni.iblogger.org/noes_de_aprendizado_de_mquina.pdfIn PDF document text
    • http://kurixuj.sportsontheweb.net/nojapep.pdfIn PDF document text
    • https://vinovubetiloj.weebly.com/uploads/1/3/4/6/134679092/pulaluse.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/bamafanogaruvagefog.pdfIn PDF document text
    • https://newavutija.weebly.com/uploads/1/3/1/8/131871734/926352730a.pdfIn PDF document text
    • https://rozutawupev.weebly.com/uploads/1/3/2/6/132695629/jatoguwemirufatol.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/xoxaneral/c._g_d._j_mandla_song.pdfIn PDF document text
    • http://xiposebajuremi.rf.gd/t_c_s_ka_full_form.pdfIn PDF document text
    • http://rubofad.rf.gd/15059054233.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/27197773514.pdfIn PDF document text
    • http://zititerawori.epizy.com/48956058125.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_off0000e135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE135 5216 bytes
SHA-256: 1ee409c12a9513db6a015de030e2815fc7f75f29ea4ea14e8c2ac7b6b5d5eb93
font_01_sfnt_off0000f2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F8 10396 bytes
SHA-256: 5b7cf4b090c05df2dbffe04acacac3bc0a9b2d4492f231cc614df497704b950a