Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ef453c2793a9c4…

MALICIOUS

PDF

44.1 KB Created: 2020-10-11 16:34:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e1a736a6684f386b3380dfc9f3df2b40 SHA-1: 4e73799659f92b3e42edc5767966a99e45fd1ae2 SHA-256: b9ef453c2793a9c43cd017baffd45e8ae8bd71a66b209cb68163bff1cdff9700
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://ttraff.club/pify?keyword=20+foot+hdmi+cable+best+buy In PDF document text
    • http://xigam.whitneydavisliterary.com/uploads/1/3/1/4/131437930/rogoza-jijoxo-tasegobu-gefuzot.pdfIn PDF document text
    • http://files.timbstechtalk.com/uploads/1/3/0/8/130873769/fifizefejowuxakepet.pdfIn PDF document text
    • http://files.accentcreateevents.com/uploads/1/3/0/9/130968968/c5a6fac.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/4c5a3d6d-6d3a-41a0-aa60-7428c429748e/44241205295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/807b9878-e2ee-4d72-91b7-8fb5796163f7/roruvurivavoxuxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43ff93a-745e-46d7-8b08-1a3482de28e4/zuxubiriduz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/040cde26-b3b2-4c85-9359-c58c70737f7f/fabon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4086/6204/files/vewegitotaboligekipojuwel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9769270-f120-4b7c-8d7b-0dc8b04fe873/jidunaxuzavemadefov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/565e7cc0-c346-4cf8-ba5c-c144031931b1/42923732374.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_off00006cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF8 5584 bytes
SHA-256: 0a97440a8a7c53d91cc7efc8381a96af9b1286350ad45ae86ed95a807c450685
font_01_sfnt_off00007fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD3 10624 bytes
SHA-256: 7b0adca439d73034ec3c9d414158e8fa5f4d3af841fe34dd4f02762b41528369