Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d8eccc5c44ac11…

MALICIOUS

PDF

44.5 KB Created: 2020-08-09 00:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f60c4cc73ebbf7be6d7e38a39921fd18 SHA-1: 7247f1f9bc1118a345cb757a3ea1aeea52ecc438 SHA-256: 69d8eccc5c44ac11980cd027beb16c6dfe14f6ae5c5570ba297bee1ed0029173
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the redirector heuristic suggest a phishing or redirection attempt.

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.
  • 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.
  • 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.ru/pify?keyword=nelson+mandela+book+long+walk+to+freedom+pdf
    • http://vitejiv.djspeaking.com/uploads/1/3/1/4/131409090/43e59322a.pdf
    • http://files.petermaxwellslattery.com/uploads/1/3/2/6/132681342/6372441.pdf
    • http://gukopenuj.aliciavilas.com/uploads/1/3/0/7/130739227/7044603.pdf
    • http://files.paulcohenpsychology.com/uploads/1/3/0/7/130775379/594862.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/bienes_y_servicios_con_tarifa_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/free_ebook_reader_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/jazuruwapitilozabaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/kodaresizunusapekunironu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/input_file_accept_and_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/yaesu_vx-_7r_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/mimixeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/98625230877.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/mupevowosulupidakibuzu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9108/9813/files/rimemisisiserepij.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc9.bin
b2d2bfe7b6fa02a7c92fac6878c1c508e39efb7a790e84a563db29a6d206fe87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC9 5628 bytes
font_01_sfnt_off000080eb.bin
9d16a00ff1f5d088aab7ed74808f924888d3570c910bbe9f592288cea5ec5d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80EB 10380 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.