Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8dd8a65acfdf73…

MALICIOUS

PDF

48.6 KB Created: 2020-10-17 04:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 285ae3eab10b61144c54aa82c010680f SHA-1: f4a944a7c5f4829a43c19f4692e0035d6687e26d SHA-256: aa8dd8a65acfdf73d8d53248afd5972fb76d9af3772582b7aa1b530748e0c68d
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://ggtraff.ru/wb?keyword=exposicion%20oral%20caracteristicas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f8747744f087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f8a131eefa17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5f8834ed3c958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f8a4206ebc89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f8734826d43c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8896271a6cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f870dc518187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_5f89d9866c33e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f87b014aac10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f891692619de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f87e98b1c1a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f887839cf37d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f87010a57de6.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/b7a2182b-c3d9-4172-ad5c-ce0c06b44be5/50858552143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a96b06c5-a07c-49cb-a93c-3ce1d05f5131/89389993927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e21f67b7-78cb-4777-bf65-eca9a134abbd/zikalojapimogipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a261a230-9c8b-491d-9513-6db5fd221a06/17603305912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aea26791-1fd4-4bb1-b4e7-3c194b8f5145/49509996507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e25f68f-2c38-4416-a726-654328aa5583/viweboxolinixevimituli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a832d8-c7e1-49be-b98f-76b8b59b72a7/wetifudonegifesuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869bb698-2aa9-4bc2-ac27-75284a1a3c40/9320053148.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_off00007f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1D 4952 bytes
SHA-256: 6fd3241a429c75b5a005c62cd30fa17082739a3ef479760f084999c22f1132bd
font_01_sfnt_off00009000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9000 10976 bytes
SHA-256: 2301e3793ee08a698386a546bd4a4f1d115dc38fd36eadd070ab4199b5b29e82

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