Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ace9ea60bfde6b…

MALICIOUS

PDF

70.7 KB Created: 2021-02-16 04:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b90be832a059b5d8230e54a63ab20502 SHA-1: 098d983679db6067dfeb0475057b5d325d31e682 SHA-256: f3ace9ea60bfde6be469c9f0d66d1b773351dd3e393cec6db9fd537258c27e93
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/wix?keyword=timber+construction+manual+herzog+pdf In PDF document text
    • https://cdn.sqhk.co/dudexobexine/djbiiBv/unspeakable_crushing_stuff_with_cars.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/ghN8Sii/lausanne_2020_youth_olympic_games_hockey.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/gebAgju/dank_meme_soundboard_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391319/normal_5fddf88f05183.pdfIn PDF document text
    • http://wbigs.space/extract_url_from_hyperlink_google_sheetsdey66.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/ibhhDie/aaron_donald_draft_class.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_6026bede77fe3.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/hiiiD3e/26694244267.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461777/normal_5ff7be1b6b5ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471719/normal_6029f018705f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_601e51a6e5052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463009/normal_6022c574ca274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5fe611a3a753d.pdfIn PDF document text
    • http://my-favshope.online/942003932407mkwk.pdfIn PDF document text
    • https://cdn.sqhk.co/nutanujel/IibCjhU/sad_alone_status_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/fDjhZGY/20651857129.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/juicgih/in_the_darkness_alfa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402718/normal_5fef4deb0ebee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bejenosugede/zuganexelatenofenuliv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA91 5592 bytes
SHA-256: 226faac6d2b2cc85d0153366493e7aff30ab93a4adbd2174575b3d5a775a52e1
font_01_sfnt_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 10024 bytes
SHA-256: 6956b8a0b88a74085d668bf7ea74140e1cb03813a9543d860ae705adf92e5568
font_02_sfnt_off0000ffac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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