Malicious PDF — malware analysis report

Static analysis result for SHA-256 f799b3707b3e5df6…

MALICIOUS

PDF

49.2 KB Created: 2020-10-27 22:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: a34c100bf146d2a7820baa0ba88fe9e7 SHA-1: a0805a14f17d1abe72424ae8760a5f8593830fea SHA-256: f799b3707b3e5df68f88bb3c02f5bc3d7d0e73a5635022537062c1b234b7cc0f
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=consequences+will+never+be+the+same+gif In PDF document text
    • https://jusujonolixutuw.weebly.com/uploads/1/3/1/3/131379247/fuwuzesobizixegatuje.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/vozuwut-wumomomo.pdfIn PDF document text
    • https://mexugagerow.weebly.com/uploads/1/3/4/4/134482965/3844565.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/kufig_limizojamugumu_mazajarosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413108/normal_5f96fc4c91d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5f9045ad7f0f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f8ecfc6ceb86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f8b9d67d025b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_5f97172b1d243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f8a6214b8afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401696/normal_5f927afba1626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_5f8ffa6a879b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f8ebc26bbeb0.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://s3.amazonaws.com/damerirazib/patam.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/wewogevokolezave.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/75752188640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0572eb36-ff0c-454e-9a99-1c897868869c/78989825624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/955f126c-4226-407f-b10b-3c44f3852d14/jojetizodazegawokugodines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c79971-8d09-45b2-a407-aef906e142da/25858135879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc32e152-58c3-4ed3-a5cb-c34e0f899993/ropuripafikegoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eddbb224-b0ef-44bb-bb63-ec69a0007031/32550073337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/210e5040-7d0d-4f0b-8ecf-475897058f85/kugelezipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc198b27-c600-47c6-9422-784446437d72/liriwedemipeleruze.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_off00006ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 5620 bytes
SHA-256: f0d805fe4c28546bbe0fd969e72879a43a17ebcf2905fb7d26976541dd113622
font_01_sfnt_off000082f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F6 11088 bytes
SHA-256: 7a26c15374226d35e8b62832f0ed4ac92dcbb551f5852dafb80ec1d424e50311
font_02_sfnt_off0000a8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333