Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eb991b5a2ccc15…

MALICIOUS

PDF

36.8 KB Created: 2020-10-02 17:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 922cf986696374c7f0adfae3be18b862 SHA-1: fb38be06df6481d7735afa629dd6475d99fe8bac SHA-256: c1eb991b5a2ccc15db87046fd9fb40aa6a92d87607a3a2a63c930ab0dfb0dfbd
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.cc/pify?keyword=shoes+for+crews+old+school+classic+iii In PDF document text
    • http://files.ballaghbotanicals.co.uk/uploads/1/3/1/3/131398334/5733028.pdfIn PDF document text
    • http://files.ganaraskaglow.com/uploads/1/3/1/4/131453718/8f781b.pdfIn PDF document text
    • http://nugar.ukeanbehappy.org/uploads/1/3/0/7/130739298/sodoradijeduba_wubezetigeve_wusodexu.pdfIn PDF document text
    • https://site-1036921.mozfiles.com/files/1036921/61851814592.pdfIn PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/90496981354.pdfIn PDF document text
    • https://site-1038497.mozfiles.com/files/1038497/72462773374.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/guxarama.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://cdn.shopify.com/s/files/1/0433/5822/4549/files/filuxowap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/what_order_to_watch_the_fate_series_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/68967923817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1714/1909/files/lukirojubidupom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7345/1670/files/fojegulawekesukenifeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2610/6528/files/medejabadosebedixewivuna.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_off000045ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45AB 4904 bytes
SHA-256: d5aca282040cef456fdefc441059197e7aa948a57dceab4e362a31f0b89b1fb8
font_01_sfnt_off00005669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5669 9948 bytes
SHA-256: a8114207ec4155c6e71e3a56507ab884bc47b06a5053b6617e6088b788375bde
font_02_sfnt_off0000786d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786D 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333