Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceafc891d1e4c1bb…

MALICIOUS

PDF

46.3 KB Created: 2020-11-01 04:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: c3a39936c7bc8444590a0275f6e2b031 SHA-1: ca0ac6988296693448358d1dfe796fd4545d22f7 SHA-256: ceafc891d1e4c1bbc2e2651a54c1ae2fbfe623168f06a7195b158184c91b296d
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.me/123?keyword=planetside+2+vehicle+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f9799bb606c5.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/d549da259ed0cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f872e3fa0e5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8d3e7f41269.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/147f287276ec8d.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/dukajevo/algorithmic_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbdda8b-af52-4330-9e63-67efa2491826/vowamokibuborilotabuvu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7961eb7-5509-4e01-aeb3-914f3473475c/23668710266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b30e88-b318-4d3b-8ea0-38267ddcddc7/xunasagokibupatopinuwoji.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/8921788355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7593/6157/files/kobilivefonexot.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_off00007611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 5296 bytes
SHA-256: a3f263eef8941a66d6c59f1fa538e06f0727aaa7947eaf3bf067f0246cda14b8
font_01_sfnt_off00008821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8821 10700 bytes
SHA-256: 88c49375943730c4446000e26fbd788c920b69a92b254d750c2e8fe09bacf774

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