Malicious PDF — malware analysis report

Static analysis result for SHA-256 230f444d5480fdb2…

MALICIOUS

PDF

53.5 KB Created: 2020-10-18 22:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30d2bce61ec763a4e000a51563b70f59 SHA-1: 97f111d4a519dd3dbccfa8bafe25d725ed1dce16 SHA-256: 230f444d5480fdb2bc0a12574417e922d567a6211fba541c7fe33c22880aa4b7
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://ggtraff.ru/123?keyword=one+strange+rock+genesis+worksheet In PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/e906e241a.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/cf345ca819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f881937bee5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5f8c25f38cac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f872927b219b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/48772022688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/63875751387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9140/2146/files/devug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/omt_review_savarese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6813/5855/files/simple_present_tense_worksheets_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1746/9604/files/black_clover_william_vangeance_is_licht.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb952ccc-1f69-40a5-9b0a-4fbbd28eecc1/85912287948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a78c6e-de4a-4899-ac49-82a71c627b3d/jitifotovisidozile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0c14a8-8125-4c88-b181-da6649ff5590/kikaxenelopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a24d8a-0749-4571-8041-1bc65ebce066/liwikisuvasupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b431e0fa-e071-4132-ae56-9d7661306807/komupoxefonubofabatetun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a36033fc-4568-4019-b521-2dca99a18ac0/73612649374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d2af93-6c48-44ac-b42c-e65ca04e5b93/liwirewoxiru.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7070 2912 bytes
SHA-256: d0763fbd271711262b0a26362cc9c99fb155632731fabfacbbfc72efdb3f7c44
font_01_sfnt_off00007ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 5212 bytes
SHA-256: 72ba7f21ec7b0da723b50f5262849d75c9a3fbf772c97d22f59be9a4ff60a8ab
font_02_sfnt_off00008c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9A 10316 bytes
SHA-256: 4f6b7292d6ecd68b1daf780a00b7b22b3c42245559794c52c3fbd20bdf728d9e
font_03_sfnt_off0000b001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB001 7352 bytes
SHA-256: 972a9894b3dfc3ece5a6b451e80dadca6ef0776bff5e73682a8e6edbf099e6bd

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