Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9457995318ae18f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-14 18:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3af9e40211a92fd3f8c6b1952389674 SHA-1: c848adeb51de25a3d5f665209f310f3e10a0f1eb SHA-256: d9457995318ae18f98fbffee255388f47efeeedaa35e901946c35656b1365e9a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/aws?utm_term=iqiyi+inc+earnings+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483083/normal_5fd8ba3cc25c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372086/normal_5fcdb96ba6a4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_600181e58108e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_600728f4f21b0.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/eghv1ha/magic_mods_minecraft_1._12._2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369663/normal_5ff135f6a2fad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427282/normal_5fd09577604f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482405/normal_5ffe12c743640.pdfIn PDF document text
    • http://xidoxuj.22web.org/universal_property_and_casualty_insurance_underwriting_guidelines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fda169cae239.pdfIn PDF document text
    • https://cdn.sqhk.co/duzemata/if0hbjc/the_child_of_slendrina_apk_mod.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/novipaliwid/tarazadenu.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/xejobaxowiguvevodunut.pdfIn PDF document text
    • http://nujobig.rf.gd/rexidine.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/86736911280.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_off0000da48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA48 5236 bytes
SHA-256: be8ef58bde8b4fa675215ebb863d3019a8a4b35e797ec879d5615d4d96c16d04
font_01_sfnt_off0000ec32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 11724 bytes
SHA-256: 37ee9a44aa7992b0a409ef638ba239c2ce7ea81fb0bb2ea797bcc9a6532ce74e