Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52064175edb7ec5…

MALICIOUS

PDF

45.8 KB Created: 2020-10-30 18:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b2badc9002389f8df8671a240f73e957 SHA-1: 9d67273f1e65f02efa0721bf4995b4ac8f55b2c2 SHA-256: f52064175edb7ec570492b7df4ee0158c20b1204b7fd57cfc59f087a85de438b
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.club/pify?keyword=eggnog+ice+cream+recipe+cuisinart In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/newek.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/dofelamidagalofux.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/1/0431/8127/7342/files/zujiluluxif.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/columbia_county_dashboard.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/basic_mathematics_books_free_download_in_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6425/2826/files/megusunipulixeliwodapigub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1857/3735/files/physics_halliday_10th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/28009334580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9126/8262/files/dusugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0828/9699/files/72782687330.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/91775163730.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_off0000726d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 5176 bytes
SHA-256: 9b0eb23d42e5437065b02ae15dcd18a5eb940cebc59249f4713086026391d761
font_01_sfnt_off000083fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FC 11272 bytes
SHA-256: 53f39884dc5ffe497a3a8cbd3162fc2b18bb5dc8fe9f752f5a8f227e2202a170