Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee3b1809f846573…

MALICIOUS

PDF

38.2 KB Created: 2020-11-09 10:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 753bdfd32a416bb55ca33a0fa8cb4451 SHA-1: 5ae6814f90493a9981f640a3dacf23b30e4bf3fe SHA-256: cee3b1809f846573dcd63a0a92f7f44106623538e6086fb881986872ff099e95
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://traffine.ru/aws?keyword=run+n+gun+2+mame In PDF document text
    • https://sagerogokijisoj.weebly.com/uploads/1/3/4/6/134601402/e2e3cedce03a.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/dapojox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f8a8d5b226b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384459/normal_5f90e1e5974b7.pdfIn PDF document text
    • https://xaranetudu.weebly.com/uploads/1/3/4/0/134016810/matekogag-taketel-fijum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f9fdb6b05d66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474746/normal_5fa8aa210bed4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005635.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005635.bin)
    • https://s3.amazonaws.com/fosalizuzu/fuvifajujivovanarev.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/wazasusegupaxusijip.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/transfer_imprint_ark_command.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/mediacom_channel_guide_iowa_city.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 extracted file (font_00_sfnt_off00005635.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5635 4840 bytes
SHA-256: 48e0a64bd5e9d25177ef97b7a291d2ac6370e8a59bb9bdae1b4ac3e2b8d89708
font_01_sfnt_off000066a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A5 11112 bytes
SHA-256: 9269bee7059333b039f2641bd49a58c97d469f753ce3c66353af61e26e12a446