Malicious PDF — malware analysis report

Static analysis result for SHA-256 40292ab68172a7f7…

MALICIOUS

PDF

37.4 KB Created: 2020-11-08 00:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e9255152c333633b299613adce60e5df SHA-1: 68bcdf5d210c3fe3ca9f823d1916333200fbae07 SHA-256: 40292ab68172a7f796e521d3df661d75eb077152fe25515c7e9ec91b927e91f9
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/wb?keyword=carolina%20golf%20at%20botany%20woods%20greenville%20sc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414153/normal_5fa53e4c3a2d6.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://uploads.strikinglycdn.com/files/37d2bfcd-bd4e-4876-8dc9-5cdc9020522c/67437203320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe219c8-c453-4b45-b53b-d5c1200b0089/72836869579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f909e7e-8cec-45ad-9339-adad4219cc9b/jaruk.pdfIn PDF document text
    • https://supafewaseg.files.wordpress.com/2020/11/figos.pdfIn PDF document text
    • https://nelijonex.files.wordpress.com/2020/11/livugegonuxemi.pdfIn PDF document text
    • https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d759aa-e72a-4b85-942d-a663ecd7ec6e/45649230008.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/mario_starcatcher_2_game.pdfIn PDF document text
    • https://wixipozi.files.wordpress.com/2020/11/togojivefukibitexalotifi.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_off00004491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4491 5396 bytes
SHA-256: edff0b5816062f263fc9e7fc3eb92a74d29cf2a3b021dd32e33e9dc18044a1bf
font_01_sfnt_off00005718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5718 10336 bytes
SHA-256: c74be40b36728c857aaec1aa9d79256987c1b860edebe53526e9a894e587d8ff
font_02_sfnt_off00007a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A75 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230