Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca49756f7e18f1c…

MALICIOUS

PDF

38.2 KB Created: 2020-10-17 16:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f40ab58c350e6f403f2e532bbb4aa08c SHA-1: e189de1919ec09bc82d5ae84028614d28b522ece SHA-256: 2ca49756f7e18f1cd4b7da7ae557332ab5a74a5b78ae1c3d73e9d359bd8e92b5
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://gettraff.ru/123?keyword=titanic+theme+piano+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_5f89cfdbdc00c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f89e781ccbaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_5f8a176217328.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f8ae6c54df2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f89f908d171f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f8743964dc7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369498/normal_5f87de58cdab0.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.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/a879717b-da2d-46da-b102-9c3e92bf73ef/73501237672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/870176d0-e445-4526-a9e5-2f4c89d1afc0/28834735694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a63dcf-8752-49d0-b0e0-37f59e55fa2e/buvomukivipurosolivasuvuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34071a0b-8c5d-4799-86a4-ec8481770994/dixaronu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9240/5143/files/21703804667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0651/3311/files/17819979435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9477/7760/files/multicultural_organizational_development.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_off00004c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C77 5036 bytes
SHA-256: 091adb9e67823d8fa614a656ef7da93b1eada306d55cac6f029d868ede204310
font_01_sfnt_off00005d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6B 14472 bytes
SHA-256: a3b6bb44878df8b631a7b78c03b8650a5edebc53c06d9b717e758c0f1d392620