Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddba340f4e858c89…

MALICIOUS

PDF

39.7 KB Created: 2020-10-29 14:50:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 5998ff4f746aada9d4df7c1410bca7ca SHA-1: 9a04d9e0df1eadd442c508f4df53d1d39c981338 SHA-256: ddba340f4e858c89e0467efe56314713218f8112d03e07bf8399a9293f6e6429
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://ggtraff.ru/strik?keyword=codigo+de+barras In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5f918d2545d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420608/normal_5f9718019de52.pdfIn PDF document text
    • https://rasuzumiketasak.weebly.com/uploads/1/3/4/3/134393825/xosotaxebelidetikise.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/8692159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f8fdaa8d9a5c.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/db586a1b-1b57-4c61-9322-e33632e5a161/ropusapekedozadap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bb67774-3eba-465f-8e53-d7fe8547867b/47287041469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2039fa9-5d4f-4620-8ea0-ac65a61267e4/xumutiromafoxil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a3e87c6-597d-4ecc-b95b-e5008a7755e8/data_warehousing_toolkit_by_ralph_kimball.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/xukekijikamenumipimuwezoj.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/tedok.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_off0000596b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596B 5004 bytes
SHA-256: 3ec2ee0bcde850124a71d4223b24518ed6fa3896e811390efdf5cb2d299fd398
font_01_sfnt_off00006a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A75 11836 bytes
SHA-256: fa948cd897e2c1600fbe00ab6bcd0eb9d6cd5f87de78660df45f9b47546c856b