Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98f2a6e68d06b0f…

MALICIOUS

PDF

41.7 KB Created: 2020-11-07 19:31:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 2c971cf67a4cdc1ae608aab865e81dfa SHA-1: d3574ea8cf8abfbf419298484e9e446b8565d3a2 SHA-256: d98f2a6e68d06b0f0da0bb3b790f40adac4ba5cafc1890007a3349811b915275
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?keyword=mobdro+firestick+apk PDF link annotation
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/538a5482296c83.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/jefarilebiku_lozora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382966/normal_5f9817e440df7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5fa3b91a86f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f91e1a292ab1.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/nokiwovowus/semobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a12c29-a110-492c-8674-3bcae6d0c19d/39666469428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa92105-6147-4228-804a-2fb8d529cb52/milika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87209df5-1cbc-45a4-a906-859f62227303/the_last_jedi_novelization_reddit.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_off000062dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DC 5324 bytes
SHA-256: dd953cf4ae850c5d92b5b60bcc07c1308b342033b71baebb67ca00baa41ed49c
font_01_sfnt_off00007518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 11228 bytes
SHA-256: 558b55f3ab36675e52193fd83bd752ed5a499276175b74bb70fb792901c484d9

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