Malicious PDF — malware analysis report

Static analysis result for SHA-256 979acc69f1f32a5a…

MALICIOUS

PDF

36.6 KB Created: 2020-11-04 04:18:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2ed2beba16645b15e067886f7a6ffc7f SHA-1: 962c81ff7d4b17d199ebb8b863f6308c74b76cff SHA-256: 979acc69f1f32a5ae04e920f59b89751860109e95c6b4a135c8e62692540cfb2
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=mahoning+county+auditor+search+property In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5f9741f216b8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5f8cc74a2bc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f88b03c950c0.pdfIn PDF document text
    • https://sutukukibefatu.weebly.com/uploads/1/3/4/4/134486522/pufuxejer-sasopo-mugunenevifezal.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/1194520.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/xutuzoxofuwuned.pdfIn PDF document text
    • https://pufukowog.weebly.com/uploads/1/3/4/5/134583281/7663420.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/6d593648-449f-4390-90dd-6700003dfba6/kebemufavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7e1349-f144-4896-859d-a9466077e00d/80722341269.pdfIn PDF document text
    • https://s3.amazonaws.com/nolomuxuma/create_your_own_custom_baby_shower_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea27ebb9-2db6-4163-9442-17f3a5c1eb5e/alan_watts_espaol.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_off00004f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F4E 5408 bytes
SHA-256: 7dfc247b7a3756eb2130855b99fe96ecbfd253d36c674f55fad3ea7df1a580ac
font_01_sfnt_off000061bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BF 10672 bytes
SHA-256: a235ac203243322e85d5bd765164b66884a58f5af5e9879c512bcc86684800f4