Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5bf3a2f1bc762b…

MALICIOUS

PDF

68.8 KB Created: 2021-02-13 07:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8a273cf2d694457b3f912a3f593a8894 SHA-1: 6dcb2d0ae8c9dbd7b68c10174ddf91f47976dd70 SHA-256: 2d5bf3a2f1bc762bbe6597df7aeab73513ebec6ae64eb4ac43c390223ad5a131
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/123?utm_term=corpus+christi+lansdale+ash+wednesday+2019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376866/normal_5fc69de2e75be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_601d087b07139.pdfIn PDF document text
    • http://faxobasom.22web.org/midas_m32_manual_spanish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443803/normal_5fc5d73b1bbd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380213/normal_60135975bded4.pdfIn PDF document text
    • http://wovobogawukepu.iblogger.org/91858570521.pdfIn PDF document text
    • http://bizuzoro.22web.org/dragon_age_inquisition_multiplayer_promotion_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445341/normal_6019ba7ce649c.pdfIn PDF document text
    • http://bukipanugub.iblogger.org/heal_while_you_sleep_guided_meditation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451970/normal_6026b17418ba0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454043/normal_5fc670726b4b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477892/normal_5fe0cb6c1c82d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_5ff48ed39f67b.pdfIn PDF document text
    • http://discout.online/39351470824ciz6l.pdfIn PDF document text
    • http://xsale.trade/all_fortnite_skins_coloring_pagesbkj2m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xajalad.epizy.com/somizugurudotufajenubi.pdfIn PDF document text
    • http://mebubilatenizef.epizy.com/clarks_shoe_size_guide_width.pdfIn PDF document text
    • http://todosix.epizy.com/matrix_multiplication_questions_with_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_off0000ce93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE93 5740 bytes
SHA-256: fef86a133f21b466679c027a28aba01e9861d10ec83b63ee6e04e53902f13b63
font_01_sfnt_off0000e22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22F 10476 bytes
SHA-256: 71d40948f89f473d5b12c784dec528d444871efb7a3a97149003afc5218120b2