Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c14badaf1b04b88…

MALICIOUS

PDF

40.8 KB Created: 2020-10-03 14:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b518edf05c1d656fa5cee848b53875f9 SHA-1: fc7fe8bee3c3b6b5b958c0b6fce604d7bf6f4343 SHA-256: 5c14badaf1b04b885f23591d95b406327ef76308355ff16eef36740ce4277992
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cctraff.ru/strik?keyword=aviva+life+insurance+policy+surrender+form In PDF document text
    • http://xowixuso.thedoorsandiego.com/uploads/1/3/1/6/131606968/sijeronogaw_telowifojeso_gazafujetomibaf.pdfIn PDF document text
    • http://dareludik.alisonwhismore.com/uploads/1/3/1/3/131378950/9df2370249.pdfIn PDF document text
    • http://files.manyanabeachpad.com/uploads/1/3/0/8/130813777/berulog-xejemitem-lapudir.pdfIn PDF document text
    • https://site-1038592.mozfiles.com/files/1038592/66325575207.pdfIn PDF document text
    • https://site-1038682.mozfiles.com/files/1038682/wezemizaguduwusakobuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1525726f-f742-48aa-9116-7f18453bbbd4/pijuzevuretikojefades.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b17bd402-147e-4af8-ab93-e5b189a143b4/dubenigumelikofojatavoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c313ef-908f-4a5b-87d8-57ec5594c3e7/buvibokakaxogira.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_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5452 bytes
SHA-256: 34b7a4b1e9d2725c6d7b6fbf187f3cb0eacd0113b3b1999af5853a844fbb893b
font_01_sfnt_off0000738b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738B 10260 bytes
SHA-256: 3393899a15723ca56ec7dfe949b5a6193b912245f164f53ce9c213dbb87bb5f7