Malicious PDF — malware analysis report

Static analysis result for SHA-256 da53c0cfc83145b0…

MALICIOUS

PDF

75.3 KB Created: 2021-03-14 04:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 87b701ad62815366616f006a653b6171 SHA-1: cce22977c21ddaa66864297c2adec7a73f93c1a7 SHA-256: da53c0cfc83145b01cc2449caa051d37af872d3513b3aaa84840f5383e2bcdb9
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://jumiwimov.ru/award?keyword=tujuan+akreditasi+puskesmas+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5ff6548d8bc2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484609/normal_601f89f8a9594.pdfIn PDF document text
    • http://ufenmac.com/jabujixopamozowi47t62.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/25377098003.pdfIn PDF document text
    • http://groby-ritual.online/283231887336rmmo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478123/normal_6032f88869742.pdfIn PDF document text
    • http://kmplitka.shop/wayne_dyer_videosgck85.pdfIn PDF document text
    • http://obmenkalnr.online/jawojifoziwumatujatumezaj6cx78.pdfIn PDF document text
    • http://zesaguzijor.mypressonline.com/modal_verb_explanation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501980/normal_6047cbd993bf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471106/normal_6043505a06209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424010/normal_600dcf8508262.pdfIn PDF document text
    • http://shop-you.xyz/costco_photo_sheet_cakeri3u9.pdfIn PDF document text
    • http://vawadofofasip.getenjoyment.net/greek_gods_in_percy_jackson_movie.pdfIn PDF document text
    • http://lakcherie.ru/rosiselixalezenawt3ldu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389599/normal_5fe29c17d45cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumosaneja.onlinewebshop.net/88120496925.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/88489867816.pdfIn PDF document text
    • http://liduvitulugug.onlinewebshop.net/how_much_does_a_5x5_round_bale_weigh.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/is_it_legal_to_marry_two_wives_in_australia.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_off0000e7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B9 5244 bytes
SHA-256: 8f99b588c6c5eca21a20b7328ea52d8c232607b788a23348a42469f6a30e430d
font_01_sfnt_off0000f986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF986 10948 bytes
SHA-256: d803364b0065e8279da680b8c53ead16f8de51e7f21489d8efa0e7e32e01382d