Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6562ef2e2121de…

MALICIOUS

PDF

80.3 KB Created: 2021-02-17 01:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f2a5e6de1b10b4c2b3aeba383762bd1a SHA-1: 0b60a10f58b23662b7f7b8aee9782b1128d1de75 SHA-256: ca6562ef2e2121dea3ff7652ca1f80f2b84586eed17458884d1292c8214e63d0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=unblocked+games+slope+multiplayer PDF link annotation
    • http://idealicaitalia.website/icici_cheque_book_request_formmb101.pdfIn PDF document text
    • http://forecast.bet/brain_gym_exercises_free_26_movements2cxqm.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/billy_goat_outback_brush_cutter_manualtjfrt.pdfIn PDF document text
    • http://mosdendy.store/interview_with_the_vampire_full_movie_google_drivewj7o8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5fdaa962d8e82.pdfIn PDF document text
    • http://indonesia2health.online/pokemon_glazed_full_pokedex0azwk.pdfIn PDF document text
    • https://tigewatujuw.weebly.com/uploads/1/3/0/7/130738543/5d4f8.pdfIn PDF document text
    • https://babuzusevajuwo.weebly.com/uploads/1/3/4/8/134878483/5225629.pdfIn PDF document text
    • http://graatorama.space/business_communication_notes_for_mba04qnp.pdfIn PDF document text
    • https://sabigojepesadiz.weebly.com/uploads/1/3/2/8/132814096/e627e2b1dfb8fb8.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/6eb6f91cee.pdfIn PDF document text
    • http://swiss-gear.store/mojajudobelixajeded79sq4.pdfIn PDF document text
    • https://xutobegepoxebax.weebly.com/uploads/1/3/5/3/135333125/fesasug.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/dee5ccbe51ce.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/wujanozo/number_line_to_100_000_worksheet.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_off0000fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 5692 bytes
SHA-256: 6cdf1be1abf7cd7c656ae7d6cee1c7df0ad4ca107026913df4f1d5fe5e6f9028
font_01_sfnt_off000110b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B7 10472 bytes
SHA-256: 679d3ac665532b5e1562e1f790d43a62f4b416068eebd3c92cbccabbfe92e56c