Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d716389712e6265…

MALICIOUS

PDF

42.4 KB Created: 2020-11-05 16:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 86f7fff83c736b09540a15b8fb43f334 SHA-1: 9e57c70d58bb4ddc6138d303bdcd65e82fe9a58d SHA-256: 3d716389712e6265d98b19bf2ef03d9168b8ff279208171ceae659fbdab6f852
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://traffking.ru/aws?keyword=jareds+gallery+of+jewelry+stores+evansville In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f939a7c68639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458623/normal_5fa0a4b286066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5f93b7317b956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f9845019e013.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448992/normal_5fa31e4735b72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_5f98d72c884a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f9d3dd67fec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388177/normal_5f91b0d790078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5f8bb943a0e75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_5f9b9315ea2e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5fa36a59e497a.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/dapekufoxiraku/nuevo_testamento_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/22198012246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ae5d59-8668-41b1-8610-7798a0d8ffc6/xoxesagoxe.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_off0000653c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 5392 bytes
SHA-256: 04f680e3298efe12904a626204ee4a6d856f3de25ceaa11684a9ffe36b922b76
font_01_sfnt_off000077c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 11140 bytes
SHA-256: a0d9febcff03a3a00af68778bb57bddc1f2bc0a00e6554ef82684e1369cb4a85