Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6804847545dede…

MALICIOUS

PDF

37.9 KB Created: 2020-10-02 08:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7cb170b9450de60b3bf816059713b658 SHA-1: 23d91f74748bc6f6266b651b9ed6c38a717ca419 SHA-256: 3e6804847545dede01e2f8df7d5524209109be0d302922de700ab3ec6ae97759
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://gettraff.ru/strik?keyword=activate+piv+certificate In PDF document text
    • http://files.drewwatsonpups.com/uploads/1/3/1/6/131637953/zajutebeweterazuka.pdfIn PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/23586337912.pdfIn PDF document text
    • https://site-1037850.mozfiles.com/files/1037850/66419714894.pdfIn PDF document text
    • https://site-1037152.mozfiles.com/files/1037152/kavatow.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/pekawokajax.pdfIn PDF document text
    • https://site-1038351.mozfiles.com/files/1038351/fixaletipaxujanabig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/integrated_mathematics_3_volume_1_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2987/0245/files/27904778259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7241/2055/files/pexitumaluwojupox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0385/3476/files/xitazajitodulaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/samsung_6s_edge_cases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3001/8210/files/yes_juliet_dead_photo.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_off000058a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A9 4848 bytes
SHA-256: 8214332c531a7637e7523b2b547d54da75f9a84ba8dd7267665ea347877800ca
font_01_sfnt_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 9916 bytes
SHA-256: 80079dc11ca9491141600cb3fbf8f287f27f5dd1fcd458a0458d34790892eae8