Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e79d79b43bdd4a…

MALICIOUS

PDF

44.9 KB Created: 2020-10-29 23:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: d869afa1e4fdfc5ab8fe075c5abace5d SHA-1: 86073e639b47fdb812a9ee64b94fd47a38d70729 SHA-256: d3e79d79b43bdd4a89738b3036472be96382daa5f51e1c0e4309a63d5452d2ef
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.cc/123?keyword=usps+airmail+stickers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f871517da9f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f885fc63f8df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f889e582cdf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5f9a7a69c4cf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f97581e7a7c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376866/normal_5f8f2c1935315.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/tatematujopul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/battery_percentage_android_app_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7568/0405/files/73200768243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3965/2516/files/code_of_conduct_childcare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0653/2033/files/wozopipakijelafimosus.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/fudalateredikukipepup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/implication_of_epistemology_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2779/1009/files/bumarosawudo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 4708 bytes
SHA-256: d2c8b1c9f3ea2c3c25cc7e0d103b31d40b6add53bd86cf38eb1574ab74f4aa24
font_01_sfnt_off000071f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F5 11704 bytes
SHA-256: 7895b5ddbefdb3ddc3dd35bbda263161a6c213136e4093440895cd9768a114eb
font_02_sfnt_off00009897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9897 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c