Malicious PDF — malware analysis report

Static analysis result for SHA-256 edbe710e5e526432…

MALICIOUS

PDF

56.9 KB Created: 2020-10-18 09:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d879f6ffb4d5b28845d7252972087fd3 SHA-1: 40019dd7299c74c9875f399a2316ce91caf168ae SHA-256: edbe710e5e526432484d652d5f7dd7e331ac772538546dbe91c9015e9f11ca1b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=discours+direct+et+indirect+present+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8a0d9ec3458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f8aed9f21707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f876ef5a8fa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_5f8afc631a897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f88b9a357486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f874532610ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f8aedc89f0d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5f8b5c5f7cd0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f8b9de0812a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f8a5254163cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f8ae71947cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8806d1ce628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f8a63bf4a9a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c3c0dc6e-7159-43db-8567-6cc0bc34aaa3/81849886952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f250962-5d44-4ff2-91a3-b23631694c29/52429596588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf525726-0764-4e45-a793-e3d5bf017574/pawebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dc4370b-be9c-442a-a298-117ab92fc284/wenobisuvudorarura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1767/3636/files/1985_bayliner_capri_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/spiritual_warriors_guide_to_defeating_water_spirits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/lacidit_du_lait.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7738/5374/files/28930294207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0183/0302/files/pilavetegijujawuguwapukab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0565/9296/files/2016_2017_asvab_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/oglala_lakota_county_school_district.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9388 4788 bytes
SHA-256: 51e116d35fb81921769c2aabf4e5aac096d4a273075d7c22d7cc3a0a03ea2980
font_01_sfnt_off0000a3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D7 10456 bytes
SHA-256: 1c4da45a7f10974ebf9a98ba0b8f76683039d27ffe4f0c42c32e5ec3cfede700
font_02_sfnt_off0000c711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC711 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e