Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce6e8895787f6ac…

MALICIOUS

PDF

38.4 KB Created: 2020-11-05 13:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 9e01b340e48b3c2c621c7e2da2f383fa SHA-1: 40e3a2e409ad75a89e2a24cdfc6f0a38dc087516 SHA-256: 8ce6e8895787f6acbad7d0244a057f9d3fdb39590fc3fd7f7b53886b9398719d
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=pacific+tugboat+service+long+beach In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f8b2028b2b6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f9ab91dbcb77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f98cd411bd12.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/nijosinizo/21472341466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b70eeb9-f759-45c4-8cff-6348e90dfeb0/linowipimafevem.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/77977254783.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/25762435354.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/74043030911.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/58654866844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fcc95d7-46a5-4475-8e9f-d4d300a105e4/68675592546.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/black_desert_leveling_guide_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/louisiana_teaching_certificate_renewal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ccbad31-12a0-4cd4-8fb0-256ed0ec4dc6/71634529437.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_off0000567c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567C 5344 bytes
SHA-256: 6b248582c9d04330b2d4e3543b30fdb35d2dc1971d7064b90318f7159511110f
font_01_sfnt_off000068b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B0 10584 bytes
SHA-256: 5a668015413b08c4ea329d79efca4aea0579645bb8a5ee6ac6707fe33b170bbd