Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbad7c7e60c12603…

MALICIOUS

PDF

60.3 KB Created: 2020-10-29 23:01:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b7c1fa9d73386149a4872377a3ada395 SHA-1: aecb150ec9c5f46d92f61806ef1dfcd766aab217 SHA-256: bbad7c7e60c12603c1c6bb1967d257491256429313e268d31c4a90a16bb555ab
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/pify?keyword=appeal+of+the+cherokee+nation+1830+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385202/normal_5f9353e24024c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f8d8917665c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8a2fa96db2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5f94f63258156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5f8a14fbd0a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386852/normal_5f8d4e14a8ed2.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://uploads.strikinglycdn.com/files/6734c4c4-4d33-4cfe-ac49-24bb0fc82768/supuwogeluxileritopamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dff1358b-273d-46b6-a831-ffe0ff82b4b5/zenamitobezogipaxupixow.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/79520748576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df053934-f872-4033-a4cb-f63b8edaaffb/177560297.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_off00009f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F21 5844 bytes
SHA-256: 612e6bc595b56e694cffc58d7240d1a840ab1da3b87df502e226479fed2bf726
font_01_sfnt_off0000b2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2DD 10220 bytes
SHA-256: ad85c0aa454f3273fdff42f7accbf581d97dca8661448475a3f04702c3e5b84d
font_02_sfnt_off0000d5e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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