Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f1492b03807e13…

MALICIOUS

PDF

38.6 KB Created: 2020-11-03 18:48:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 34d89164c8922a8329e3ce06e6437054 SHA-1: 65f40cac5e6d11db8de19fa6602e7a7b33b0a06b SHA-256: 76f1492b03807e13fd0bbe921e3512b6ec3fc5dd114c3ff1128e9dbe03466b8e
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.com/123?keyword=single+syllable+words+with+y In PDF document text
    • https://tojaluteder.weebly.com/uploads/1/3/4/3/134384479/mudilopuzepijakubob.pdfIn PDF document text
    • https://gukenefekofuga.weebly.com/uploads/1/3/4/5/134588358/nogubufipid.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/3d25de6a-4ea2-4280-baf2-d148f84b9c20/22545116851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf0b76f-e920-4054-9261-6f0d16f8034d/39989763714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1244d1e-59c2-4658-a58c-db6ca74ff216/gudugaxumawawowuluve.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/71333349633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729977a1-ff63-4cb8-98b6-582301a46339/tofet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27efeccb-f4c0-401a-bc81-cceadc8d12c4/sonalulasuxumetux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e119456a-df7f-459d-9c0e-a42a66de793d/los_mares_del_sur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5049792-17c4-4743-850d-eac4846ad989/elementos_de_un_reporte_de_investiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7db07b2-4245-401d-9ef7-454d98569593/hareketli_karadeniz_arklar_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d2a7e3-5e07-4da8-948d-9e2e9d3edc87/46101534677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d654cd9-8be3-4336-a719-699e692e7d47/diablo_2_no_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/698b5305-5c0d-48fe-8289-740a006cd4a4/75708099894.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_off0000589d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589D 5524 bytes
SHA-256: 1d428ad3ad1f9c4d7e55a3100479a072a0d98cc108e14ba96cf3b37c717c4d53
font_01_sfnt_off00006b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 10100 bytes
SHA-256: 1bac3d64adc875cf3ca10a1fde107fe6febef7f11d0befd417d30c5b289c7d9f

Open this report in the interactive analyzer, or submit your own file for analysis.