Malicious PDF — malware analysis report

Static analysis result for SHA-256 7268ac319db782db…

MALICIOUS

PDF

69.1 KB Created: 2021-02-19 21:38:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a8fcc4debbf223123598be9813d1236b SHA-1: 4d23535b742aca6ab0aa10c32cca2338f14a4b5d SHA-256: 7268ac319db782dbbce560e1182cff7359ffdff9fa5df6257c3141b8df6dc819
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://baarspo.ru/wix?keyword=concrete+repair+manual+aci+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486772/normal_600da50c34230.pdfIn PDF document text
    • http://starconflict-game.ru/12305788237ttq5v.pdfIn PDF document text
    • http://springwin.space/4556548123099gvu.pdfIn PDF document text
    • http://detonic-hypertonie.website/adventure_games_download_for_android_phoneia1jq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468551/normal_6011cd800ebec.pdfIn PDF document text
    • http://greatholl.com/dare_you_goof9b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nazonuretowu.epizy.com/kutarudorulofuwadakuruzes.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/vilutuzozuvuxurek.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/33827124502.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/glaucoma_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/ipad_app_store_not_ing_apps.pdfIn PDF document text
    • http://muresapidun.epizy.com/fabelhafte_welt_der_amelie_piano_noten.pdfIn PDF document text
    • http://sobegomogi.rf.gd/kosafojezejekiwosopibe.pdfIn PDF document text
    • http://lotawovuvowuk.rf.gd/barbour_womens_coat_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/58451399209.pdfIn PDF document text
    • http://businewon.rf.gd/axway_desktop_validator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/android_studio_change_package_name_apk.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_off0000d36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36C 5028 bytes
SHA-256: 3cc53d5e865878e7d180f0c4ad17a2117dfab27c85e004acea144343c565fcee
font_01_sfnt_off0000e471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE471 10204 bytes
SHA-256: 47a25f71ba280a3707fc17ac15c130ec6ad615f72f84e4aec546d48bdfbb6858