Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6bb80cedd7e327…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 06:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a202994b1fc499f723d6583c51f7f67f SHA-1: c1d3a5bc95dc91f701118c41c726a75e06c02c06 SHA-256: 6a6bb80cedd7e327dd15f7658b73e2832c0f105f984a30cd152b6d1f7b213f8e
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=will%20there%20be%20a%20summer%20i%20turned%20pretty%20movie In PDF document text
    • http://fresh-ita.space/sampling_design_and_analysis_solutions_manualou210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458124/normal_60100c9012ac6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422144/normal_601428382a3c0.pdfIn PDF document text
    • http://tegor.xyz/mibukituxa8jlaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473645/normal_5ffe2701c0aab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_60245aa226881.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470040/normal_5fcfa01a5e188.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496005/normal_60093c6cd2585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450419/normal_5fe752abd36eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480182/normal_6027c1e3cfcc7.pdfIn PDF document text
    • http://leoidet.xyz/rosajowinopupufeledab4keam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/4_divided_by_0_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/clima_laboral_hostil.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/angielski_matura_podstawowa_gramatyka_wiczenia.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/juradujamasanuvoworob.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/ccna_1_practice_final_exam_answers_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/incantations_first_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/mujaguki.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_off0000da71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA71 5512 bytes
SHA-256: 1ee451a744e9cfde5e64cee2e1d08b39b645a706ecb1a904d4b0086c62af3965
font_01_sfnt_off0000ed0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 10328 bytes
SHA-256: 17822f2ab74b62bd53571e5e13a524e93842848e6b79aa8372933eee8d084e30

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