Malicious PDF — malware analysis report

Static analysis result for SHA-256 db012151eea14e21…

MALICIOUS

PDF

68.2 KB Created: 2021-02-18 09:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e9878f0cbd2759b8e582c22cfebaae27 SHA-1: 0990889e8f7a43ac98e97ce433949417eda20783 SHA-256: db012151eea14e21d2a0b736eb8ebf9468155bca56929b348b94ff6975e394e0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=bissell+carpet+mate+manual+floor+sweeper PDF link annotation
    • http://rotixumuzu.22web.org/towajedisiro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417998/normal_5fcbe4bec6d07.pdfIn PDF document text
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/jenebe.pdfIn PDF document text
    • http://usesoda.pro/android_file_transfer_hangs_maciji62.pdfIn PDF document text
    • https://remejatezikame.weebly.com/uploads/1/3/1/0/131070309/fagagiletu_takokewulawu_dizekadizopi.pdfIn PDF document text
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/sevutomalizew-zibifuwuzimujo.pdfIn PDF document text
    • https://suzexefovewav.weebly.com/uploads/1/3/4/6/134640410/gegedogetax-gevojuruda-simopesov-rexunadira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_5fd7d32d0b55a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402707/normal_5fcea6f87712c.pdfIn PDF document text
    • https://guvorike.weebly.com/uploads/1/3/4/2/134266232/ganidibunojodidop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461207/normal_5ff9b259d6d70.pdfIn PDF document text
    • http://blancop.xyz/62185224970nea0.pdfIn PDF document text
    • https://dujizajep.weebly.com/uploads/1/3/4/7/134704211/defewasukeko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366045/normal_5fe23f71bc61f.pdfIn PDF document text
    • https://cdn.sqhk.co/savimatuv/giygdjj/62117414809.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ditajizuru.rf.gd/isometric_lower_back_exercises.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_off0000cea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA6 5300 bytes
SHA-256: cd9ae0afbba4f8bbf5515a4e47caa24dd20db0497ff43f271881f1c654a955b1
font_01_sfnt_off0000e0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AF 10276 bytes
SHA-256: dde132e38e1226c45c492884a21f65188ccafd82f1c2d04e6950b62692b6a863