Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e10cf008ab3c453…

MALICIOUS

PDF

50.0 KB Created: 2020-11-03 21:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 839b29b527a583daf8e1432d13fbfff9 SHA-1: e64877324c72e34f6a129d69bc9e2983c8435708 SHA-256: 1e10cf008ab3c453d4b6004509bd160a350c94419510ebcb8cf7f9c4c94e885e
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://ttraff.me/123?keyword=what+does+death+smell+like In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5fa02ac1b9052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5f9ae58b3591a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_5f9704906aca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5f8f1efb1fc65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f8d820a1e237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/zovilefufebekejenimixok.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/ado_activex_data_objects.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/palobo.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/vaximuxuwiwanewozirigeno.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/baunvo_1993.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/weekly_employee_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/5108401065.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_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 5044 bytes
SHA-256: b9952cce9d5b06c0072164bcebfe71dd642e75cde46d4ab6243d7f7d43fa8a0f
font_01_sfnt_off00009649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9649 11128 bytes
SHA-256: 0e716d2fe6d006d002db43209e71d5a879460b991b0101c96fb037ab9519fdae

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