Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fb4f2ec655f643…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 10:49:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08e864486fb2b77c10a96923d14bf1b1 SHA-1: dbe875e27441bfba2cb40533dd32aca040eae3b4 SHA-256: 38fb4f2ec655f643d11cfae47d524108176042924d7e6f99ff25a67983135d79
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jottigo.ru/award?keyword=herman+miller+aeron+chair+parts+accessories PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453902/normal_60299f604110f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479446/normal_600ef5401ee35.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/gusoji.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/sazasalesidomagipe.pdfIn PDF document text
    • http://rimka.xyz/8344369958f1sgw.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/84072680484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451955/normal_5fd6505b1e028.pdfIn PDF document text
    • http://lojasamericanasbr.com/gelepodatemusevelivp97d.pdfIn PDF document text
    • http://mon-cmbretagne.best/tutufagavuw6xnxh.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/uppababy_g_link_double_stroller_travel_bag.pdfIn PDF document text
    • http://kuziluzesoga.22web.org/why_wont_my_safe_open_with_combination.pdfIn PDF document text
    • http://digitalmicroteter.xyz/volowup9j25u.pdfIn PDF document text
    • http://kadesevi.iblogger.org/zixekuposin.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/66293823809.pdfIn PDF document text
    • http://bupatinewesep.66ghz.com/grammar_sheets_for_middle_school.pdfIn PDF document text
    • http://winoraama.website/adventures_of_huckleberry_finn_oxford_bookwormsl8ltw.pdfIn PDF document text
    • http://sokixatov.mywebcommunity.org/fepajufapedet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://selusibe.epizy.com/keviwif.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_off0000d5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D8 5136 bytes
SHA-256: ea146ae0a4c4b48080a26c59ca6233863eb6a67a8984b651efef0485fed1f32b
font_01_sfnt_off0000e717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE717 10800 bytes
SHA-256: f68575f1c4908e8571c2053175557dd759aec0e401d19ca9eae651e0cd54addd