Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad2ffe23768bfda…

MALICIOUS

PDF

41.7 KB Created: 2020-10-07 23:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a287c8631d8aff846eca3731de060426 SHA-1: e1c210019fb37259f3bdde97250cf91be193a8dc SHA-256: 3ad2ffe23768bfda3be37af1322b4d80d67036b541203dd2c9680f564cbaa3c2
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.link/pify?keyword=seraphic+mass+association+detroit In PDF document text
    • http://files.heryellowribbon.org/uploads/1/3/0/9/130969591/kixifubumu-vukimoli-lexatosaxu-bogoridopilov.pdfIn PDF document text
    • http://files.tainanphoto.org/uploads/1/3/1/4/131437046/regubumud.pdfIn PDF document text
    • http://files.alaskanaravenbooksandthings.com/uploads/1/3/1/4/131407435/2c6e4b54.pdfIn PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/zatevewakuvenebaxufasavan.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/buduzubebafilonuzexorek.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/wogonodig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7620e4a-9f93-4b71-be5f-33289e44706b/51482057791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bcc6c7-b0fd-4118-85f7-6bcef3a18781/24449152508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbfb557e-ac61-4365-a7f3-0fc6a2a4432b/kadawavaxes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052d5c30-ad79-44be-a996-41bc91dfafb0/lifevexufabazireriridi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc899c7-72ca-4724-8ad9-be6811a94eb6/pabofomitoradod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9318d2c9-0406-4435-bb93-051cf37af895/78576960911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f389bac-d5bd-4094-aee5-42800400bef1/65612783082.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_off0000641d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 5384 bytes
SHA-256: 272e11c951c6b94eeedcdd9ac286d7222f28949f86ba0b08fd7b2d7af8939d01
font_01_sfnt_off0000763f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763F 10584 bytes
SHA-256: 475c7d008ee148e9f963dfdb077e7130c3607c9866227e8af98d331b92b42da9