Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e8f9bec9df4f858…

MALICIOUS

PDF

78.5 KB Created: 2021-02-19 13:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8f4d10de3040e107e9cd9525ce00ec78 SHA-1: 90104d3c67a17937e804d8fc70668ae995baaf19 SHA-256: 0e8f9bec9df4f8587dfc3c7c66cface9e8ec1ea97e1fa8a9b08ae5ddb8bfc235
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://crophysi.ru/aws?utm_term=how+to+program+haier+air+conditioner+remote In PDF document text
    • https://cdn.sqhk.co/zitajazasu/jCuPhgV/40921909970.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/aiexKhv/zuxifafozeximives.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiwuximu/ghFjih2/31580011782.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/6eibhaq/radetofabulizekex.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/enWnibp/22332932926.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_600e913089b0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488806/normal_5ffe526ac40ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370052/normal_5fcef8cc42ab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_602ee7ac3bc20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462065/normal_5ff86523606a2.pdfIn PDF document text
    • https://cdn.sqhk.co/lovuzegonu/GAGhiIi/dark_side_of_the_moon_meaning_lyrics.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/bubisifapagefe/73268001537.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/java_1._6_0_64_bit_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/93867407733.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/juwebirutiru.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/13329050629.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/fortigate_ssl_vpn_user_authentication_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/interstellar_theme_song_sheet_music.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_off0000f61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61D 5328 bytes
SHA-256: 22d6c38fe4eb890bac4956d6f6c5b14d228080c87b74b1f0c51c6903b6ede1c9
font_01_sfnt_off00010822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10822 10880 bytes
SHA-256: d2a76fdd758a6b3e8ef5a1097efd2f7cb8b91b3a33f83dc5d592e5d3d3860325

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