Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2d23987c298cfa…

MALICIOUS

PDF

73.8 KB Created: 2021-02-24 16:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 56771c996b32bfc45f8548ea4d6002ed SHA-1: aed9ea7cb82e44031d30e71b560aa377415d6102 SHA-256: 9f2d23987c298cfab52252d390c03dae99d4d45e31e280e98a5525f7738310bf
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://seumenha.ru/award?keyword=where+is+the+lint+trap+on+a+front+load+dryer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483864/normal_602075af69dc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5fd90431b9df8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372740/normal_60084caf3be37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_6012c2b5a128f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_60168b2c3403a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_60221c4534229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5ff4064dbf498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393044/normal_5fcf3079f2830.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/hhPsihj/project_schedule_management_free_software_tools.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416504/normal_6028f231c139b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408984/normal_5fe557dbdcd28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417528/normal_5fe3afd34e626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vowaderisosalel.epizy.com/mizujepawuxobozopuxanina.pdfIn PDF document text
    • http://lidazadopedu.rf.gd/backtrackit_apk_mod.pdfIn PDF document text
    • http://vebaxabono.epizy.com/nizarixogew.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_off0000e4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B7 5244 bytes
SHA-256: 64cf04d3aae3c7cd636dc4426fed90617cb90751e00e8c99386fd7ac79ad7826
font_01_sfnt_off0000f69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69E 10488 bytes
SHA-256: aa8e04b1d86cf45b1f062c4c192b4c0d9f45fccb6bd799b9070faf86c6f42880