Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cac9daf5aa96a7d…

MALICIOUS

PDF

72.5 KB Created: 2021-03-05 20:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1ab9220419f20144f9f5926e1dacf0c2 SHA-1: f52d272bad824bd33607f7e65aa8182607236ac0 SHA-256: 8cac9daf5aa96a7d8dc6bb3c787657fcc2b0446a3f37fc9cdb3d1d0d6d256f17
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=rendering+techniques+worksheets PDF link annotation
    • https://vafopizinenited.weebly.com/uploads/1/3/4/4/134480139/03b4d001.pdfIn PDF document text
    • http://fapseo.ru/64130349300ft9py.pdfIn PDF document text
    • http://quinzsy-studio.design/anthony_giddens_modernity_and_self-_identitywnapo.pdfIn PDF document text
    • http://899themes-demo.ru/reicast_dreamcast_emulator_biosi0c7r.pdfIn PDF document text
    • http://women-ita.space/tutebivurodewusirokixkd7jg.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/vejobikufaxafazadufar.pdfIn PDF document text
    • http://nadahul.ru/facebook_karna_hai_humkocg5ty.pdfIn PDF document text
    • http://henrysavbr.site/applied_numerical_methods_with_matlab_for_engineers_and_scientists_slader0gctu.pdfIn PDF document text
    • http://wivikaxebox.medianewsonline.com/68959158763.pdfIn PDF document text
    • http://yatvoyya.fun/45565582940g4axd.pdfIn PDF document text
    • https://lomekizawulom.weebly.com/uploads/1/3/4/7/134704223/0c4715ed6.pdfIn PDF document text
    • http://investmag.org/php_book_free_download_vu_assistanthfw1r.pdfIn PDF document text
    • http://ritixibetono.mygamesonline.org/star_trek_enterprise_tpol_decontamination.pdfIn PDF document text
    • http://lunesygets.xyz/one_piece_fillers_to_skip4e60j.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/saxefi/assam_university_forms.pdfIn PDF document text
    • http://petikeb.rf.gd/ncert_mathematics_textbook_for_class_11.pdfIn PDF document text
    • http://virotowil.rf.gd/zipile.pdfIn PDF document text
    • http://lonozixugixapap.epizy.com/classification_of_matter_note_taking_worksheet_answers.pdfIn PDF document text
    • http://kojajopi.epizy.com/boxivorepulukimazuxun.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/apprendre__dessiner_le_corps_humain.pdfIn PDF document text
    • http://joxepivebafugig.epizy.com/ropizigufanid.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/brutal_heretic_v2.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_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 5248 bytes
SHA-256: db2334a8d3d668be13d9f1c3070e7872b5cec7ae9251e697967a100e02181497
font_01_sfnt_off0000f12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12F 10476 bytes
SHA-256: 0f0934e46808f7b692ff848758c7528a4562fadf7f40c5f94a3e49645dc91b31