Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef30303afd45ebc…

MALICIOUS

PDF

45.8 KB Created: 2020-10-29 09:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 350cb931c72dfdc7c58fcc929ab25904 SHA-1: 54baf71458ee6c451a7cdf8de5595b944e3f8bf1 SHA-256: 2ef30303afd45ebca5167cc1decba05695b5db9242864535dbf6d1f3b9c0ee4b
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://ttraff.cc/pify?keyword=1e+d%2526d+character+builder In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5f8fadabcb19a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f9458d27ea13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394079/normal_5f9a459f6a252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f8a96a745571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f8fdc25a84e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8ce50b8a6f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_5f9721e354c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5f97a72c091c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f962cfd480d4.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/9e6389bf-83ff-41c4-92e2-f12a6bdbc627/mugutuwisokomupajutejurik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37aa4907-b61a-4be6-973b-f0dd7b131269/army_oer_character_major_performance_objectives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/730cfa9b-90d7-4604-bf78-18e45bb24dcd/70757776916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d56f69-0905-410d-b44b-1c32e99697b4/82576672651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb23ae8-2ea3-40ef-b6e8-13d5886d1e97/29094764265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/234a2706-12c7-460f-9e63-c03efc0477f9/givarafotugivajukovupur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2664/files/xbox_360_exclusives_not_on_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/aeneid_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2feb6db1-5822-4133-8921-a963f1fce23e/the_vertical_diet_meal_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c018af9-1f1a-42a6-8af2-da10022582db/sea_doo_spark_trixx_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5a78279-da48-49f9-a035-231d5aeccab5/16816117681.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/27599299352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/dear_sir_madam_fire.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_off000076eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EB 4260 bytes
SHA-256: 7db51166994bff6263a9faa9ba01d5ced5c408968245ec60a2be977199288df5
font_01_sfnt_off00008578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8578 10872 bytes
SHA-256: 3efe2a48b6d4b79c6d242849cb754354734f7daee3556ee0a7875b4d758f2286

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