Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6dde42f62220cf…

MALICIOUS

PDF

37.3 KB Created: 2020-10-07 07:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d599f023945dcebe62b50564a91f4dbe SHA-1: eed8cb29baf9cb6ffdcd2238175a43f012aed26f SHA-256: 8b6dde42f62220cf3d22b10177aabd0294902a5626e1dfdb9799c4f38174789e
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.link/pify?keyword=elton+gregory+middle+school+staff In PDF document text
    • http://tafijekex.perfectprotection.shop/uploads/1/3/1/4/131437237/b0210172f232c0.pdfIn PDF document text
    • http://files.medicalwhitepapers.com/uploads/1/3/0/8/130874490/pudomunigofen-zaleferid-vasex-kaxavopafuwa.pdfIn PDF document text
    • http://soxusa.ccaromatherapy.com/uploads/1/3/2/8/132814930/rurutawodijula_moridurava.pdfIn PDF document text
    • http://seriradi.stihc.org/uploads/1/3/0/7/130738971/tonotamokemez.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/1/0483/7100/7637/files/77044779809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9238/8261/files/datizawef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/harvard_writing_style_sample_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d46aedd-a89e-4499-abfc-1e936c2b3502/65885559405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdeea79-aca6-4190-af31-d9b56111cc1e/pozezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3827f8fd-45fe-4367-bd66-ebf3d35213b0/98668311248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3252df75-2184-40e0-96e1-cd6d1aad34d4/78038153874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76bb1b7-6c71-4b85-961b-b6cacae670c3/18223517077.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_off00005352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5352 5492 bytes
SHA-256: 58be3e8a4a21f544c7d111f7b08aceef589cb8562d739df9052e4de1d72d1f5c
font_01_sfnt_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 10160 bytes
SHA-256: d9d4c7d77b21518af3be277dba5937be21a19a335ec5d90ded42a7aa13c76504