Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08bf5b4c539f430…

MALICIOUS

PDF

72.1 KB Created: 2021-03-01 01:28:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66bf0246712fe33642e8737b5aea402d SHA-1: ddcb43eadfcca8d84e0b0137078f7cc6b69413e8 SHA-256: a08bf5b4c539f4304e20579d382471cad90a8f45f74aa9d8877c80dc782fa6f9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/aws?utm_term=descriptive+writing+examples+gcse+pdf PDF link annotation
    • http://sigisuzuk.getenjoyment.net/varonezijew.pdfIn PDF document text
    • http://fishland.store/economic_nationalism_definition_world_historyzhs6l.pdfIn PDF document text
    • https://cdn.sqhk.co/kulabokirow/4XkEygj/dugedebazazojejofik.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/risadajevuzibulenip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_601d85b549b33.pdfIn PDF document text
    • http://easy-money-cash.space/libubazulipavubemobawintp0q3.pdfIn PDF document text
    • https://cdn.sqhk.co/nazamesuwute/gHjhNpm/freeze_dryer_for_food_storage.pdfIn PDF document text
    • http://private-channel.site/gateway_b1_test_answers_unit_5ezll3.pdfIn PDF document text
    • http://morj.space/firetrap_trunks_size_guidevgkrs.pdfIn PDF document text
    • http://fitokapss.xyz/616395814480tt5i.pdfIn PDF document text
    • https://cdn.sqhk.co/giripiponi/MDAigjc/marco_s_pizza_locations_toledo_ohio.pdfIn PDF document text
    • http://pay-order.info/mountain_climb_stunt_apk_uptodowneihrs.pdfIn PDF document text
    • http://golixudib.mypressonline.com/garaj.pdfIn PDF document text
    • http://1xbets-regs.site/bradley_smoker_parts_canadav67mj.pdfIn PDF document text
    • http://gramnews.xyz/train_simulator_dlc_salee34pv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_601e8b1800600.pdfIn PDF document text
    • http://fafesixokegigi.getenjoyment.net/tintern_abbey_summary_in_english.pdfIn PDF document text
    • http://italy50wow.pro/pilixig7ox2r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://filestore.aqa.org.uk/sampleIn 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_off0000dc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7A 5692 bytes
SHA-256: 5805a256cb39c011d16b07669dd8088db445c6788afd2070586ef7bbf8ae0188
font_01_sfnt_off0000efe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 10548 bytes
SHA-256: c7fc0aa38122354e65b5e6c2c8fc3d316949a6bded87a4484478aaf147df61ad