Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc29ae73cb24a47…

MALICIOUS

PDF

44.0 KB Created: 2020-10-16 12:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e305469edb6ba5f2e709964de6d14dd5 SHA-1: 3204d2fa4e54636da9705cacdce09f1684631307 SHA-256: 0cc29ae73cb24a472543ce3a5bdaa0eb9e030b65c04968c63e5f4dabd5665f79
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/123?keyword=timeline+worksheet+grade+6 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f87b080ef9c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f8958760f303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f8714f97d188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8730c5b4cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f89197e6fd43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5f891ded484f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87b992f2b9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f8757f91da52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f88ceae290f7.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/larinufuzexamatiju.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fesixukorupu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tiladejonu.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/fec84c16a8ae9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0754/9338/files/gta_vice_city_apk_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8382/4821/files/vukusitamutizifup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3309/0974/files/fogibumakaveniduxukid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/jorolupaxukatoxujizuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/ten_frame_bingo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2175/2247/files/juguwawugusinifozab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/186ff1a5-ef10-4c9d-9d89-1f4fe9b0f133/4352457541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39dedac0-53ed-4dee-96a3-951ffa5d837e/zexejakemufalipazalin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4073b5ff-71fb-4bee-ad61-0a5abffbc8a9/32428422723.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_off00006eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB3 5496 bytes
SHA-256: 4a30f5ae575eadec1a08842675942fbd4a1caf131d182f47ed1a931f35172dde
font_01_sfnt_off00008140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8140 9660 bytes
SHA-256: b9381125e2106bd45c976085069424a66ffda6daa4e001db08eda0fae97856d5