Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb67ee2be11c8e4…

MALICIOUS

PDF

43.2 KB Created: 2020-10-09 08:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1dd6d1affd63a5d1bfa7528832d98860 SHA-1: 51f4c6ea3fc6e73759efa95db05b2226efd961d0 SHA-256: 3fb67ee2be11c8e489ccef21684518d7a6497f0c576038123a14c91d852f6d04
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/pify?keyword=edco+la+mesa+cost In PDF document text
    • http://saxipiwus.groomsbyjagger.com/uploads/1/3/1/0/131070450/4286147.pdfIn PDF document text
    • http://files.lakemagdaleneacademy.com/uploads/1/3/2/7/132712530/0dc7c3f0e08b27.pdfIn PDF document text
    • http://wodifi.chisagocountyfair.org/uploads/1/3/1/1/131164250/6979471.pdfIn PDF document text
    • http://files.americanbuffaloclub.com/uploads/1/3/2/6/132681045/topewotalusapevu.pdfIn PDF document text
    • http://files.luludisoap.com/uploads/1/3/1/8/131856456/munevomixajev_tadafaz.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/49b6f362-642c-4581-a119-03be69aeeae3/pexisefusota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61435a67-6d70-46ba-b674-27fe4a4b0515/62594662696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4d00fd-cd26-4ba0-9d0f-ff4873d4bc78/sovadiregirelowibabuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f144e48-87c5-44f2-bde1-00beab4a834b/rigemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/26889890091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5057/8332/files/waweno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0308/6501/files/36_inch_tv_stand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f834f02-536c-48ac-90a7-654dcdf20408/tuxapajelegadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4d756a-235f-496c-b959-fc490c6c7908/94839813574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9ba41b-f0c3-4701-82b5-8cf7f042912d/kuparepupimizap.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_off00006af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF6 4948 bytes
SHA-256: bfb5527dbbb05beef44ed3e29c7ac2c08ed488632b0e689a35c05d6d49a2559a
font_01_sfnt_off00007bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 10684 bytes
SHA-256: a75a21cd64592966cff6f47d08c343b59e92e4c40f1a64d17e2bcb94c1a88cd6