Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c053c5711a7364…

MALICIOUS

PDF

71.9 KB Created: 2021-02-21 07:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 129a906dadc6fe0be55af1a20c208e00 SHA-1: 96d4097242c1f49ec800c59156256587125524c3 SHA-256: 39c053c5711a7364b230753a887b69766cbee995e30756c9033f73ebcc184700
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://jacksth.ru/123?utm_term=how+to+write+a+critical+appraisal+of+a+medical+paper PDF link annotation
    • http://options.expert/marble_ramp_lab_reporti4kl3.pdfIn PDF document text
    • http://bavedibigilomit.66ghz.com/free_colorado_residential_lease_agreement_template.pdfIn PDF document text
    • http://icily.xyz/ap_psychology_psychological_disorders_webquest_answer_keyul6av.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_5fd976e78939b.pdfIn PDF document text
    • http://atlas-copco.su/scary_movies_on_hulu_and_netflixs34c7.pdfIn PDF document text
    • http://deutschebank-meine.com/kuwedenonix7xqap.pdfIn PDF document text
    • http://istlan.fun/lukelefawokebemoliv7ibt.pdfIn PDF document text
    • http://bokubewere.22web.org/virijatire.pdfIn PDF document text
    • http://eeuuurrrrr.space/sadunuzalkmo98.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/rinimusimekupudasuvutebe0pe23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bobosuvediv.epizy.com/64186187806.pdfIn PDF document text
    • http://darelarara.epizy.com/ansys_fluent_tutorial_guide_release_19.pdfIn PDF document text
    • http://duvewukabiwetu.epizy.com/bezavolosar.pdfIn PDF document text
    • http://temomuduzuba.epizy.com/kdigo_guidelines_ckd_2018.pdfIn PDF document text
    • http://dijakobikegexi.epizy.com/donald_duck_mathmagic_land_worksheet_answers.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_off0000dca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA3 5356 bytes
SHA-256: b2d24cc430b53828a94c4e6bece8d1c8038ca06ab2d2bc500c5e46d7724c0a50
font_01_sfnt_off0000eecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECD 10436 bytes
SHA-256: 7695927c28549bcc6a97dfe7a15081309aa4b1e678a071798ff9c6e831330dd9