Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2cf0795629d696…

MALICIOUS

PDF

38.1 KB Created: 2020-10-28 17:33:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 125067f0984158ec25d5172cfa2df1b9 SHA-1: ff59db7dcf45566cb86d38e1defe2ebf33a787bc SHA-256: 3f2cf0795629d6960ad6ecc5b79f0c5d53cf5ff4b45191a9ae7342aab4c4051a
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://ttraff.club/pify?keyword=advanced+english+tigrinya+dictionary+download In PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/2ae343b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f882e3c9d712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f8efb9e04707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5f92cd904f274.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/jasurunavopudej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_5f8c812a88279.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f8a9a59cbe84.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wonoti/folic_acid_in_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/green_supply_chain_management_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/electronics_components_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2417/7093/files/6075413374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff5669a-7729-48af-8d3d-43be9233684d/25446452309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877fd9a3-61c7-42ea-9c99-85e24b3503ac/84288733044.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/26032154345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e294b6e5-53ca-407c-8d44-62354402c56c/17332942250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/baixar_dicionario_portugues_espanhol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f751ff57-26fb-4be5-9734-7d5f7e679588/tomitazaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea254865-13aa-41a5-a33c-f9d6921295e3/13764165146.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/xitagep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d5cbbf-bd3a-481b-b70e-f000ba4dab38/fallout_shelter_download_pc.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_off0000549a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x549A 5444 bytes
SHA-256: c24daf55415aad164a7dd6adfa60b186cc72136beac4b88c6a711e9a37858d97
font_01_sfnt_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 10492 bytes
SHA-256: 90fff76dc1ca5dca4c18f343dc63c38d8f4979fa83fe043ac10e1f10efcb7977

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