Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eebea31edf40030…

MALICIOUS

PDF

57.4 KB Created: 2020-10-29 01:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b69c854244fa8048f65a9be2885590f SHA-1: 96ccffc9c7a3e620be5a9f6a08e96fe254f24749 SHA-256: 9eebea31edf40030e168975e001630a277356357ac088f7dc47797adbcef9f93
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?keyword=estudios+de+alabanza+y+adoraci%25C3%25B3n+en+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5f935bcfbcf81.pdfIn PDF document text
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/5047218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5f99d1af50085.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_5f8ab445370e2.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/zalivur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385028/normal_5f99fa899429b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f927e7daa600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5f8dbb23f2c40.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/bobojufogamiti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426066/normal_5f9865b025779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f8afaa38a8e4.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/e674d50f-f4d6-409a-a8d6-35380614a80f/51364572674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dff09fd6-477d-4d50-a3f8-6559c1090a8e/wumifelijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/murarap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5780/5992/files/ff7_limit_breaks_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/680bd928-5bf9-46d2-a41b-a93724460589/niditorewesuwatowako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b61bd1-95bb-4dfd-a176-dbc5e882fabb/39094031344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3424/4795/files/98092023286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5973/9306/files/los_aminoacidos_esenciales_engordan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ab5a543-5631-4966-8c51-729cef6e0f43/69867229127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/1488/2981/files/32625938862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21fe64e4-2248-41e3-8e38-e72c35be230a/2003_gmc_envoy_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2045da3b-6169-422b-85da-2e1641aa7622/13923492518.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_off00009b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B0A 5536 bytes
SHA-256: 906fc5b25deb0840f3afbf19e7c0bf03b9728088b2878e9a7cac92eac1f98b8c
font_01_sfnt_off0000adba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBA 12340 bytes
SHA-256: 6f6009d3df25b6a1edac30e6eef3eb1adb80b758923eae19c531e96129c5e45c

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