Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a00d9c50aef7f8e…

MALICIOUS

PDF

35.8 KB Created: 2020-08-12 12:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0068edac7653e7820c32ca9fe4d55019 SHA-1: 9342c240f7587b7728f0cdf83130149f3293c949 SHA-256: 5a00d9c50aef7f8e18b020c38cb1c93dd6cfed773a720bb0926b903fb6c9573d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, which suggests an attempt to distribute malicious content or phishing pages. The document body, though heavily obfuscated, contains the target URL, reinforcing the malicious redirector finding. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.com/pify?keyword=icao+annex+10+volume+4+pdf
    • http://files.massagemattersbynancy.com/uploads/1/3/2/7/132741535/384a311920.pdf
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.horoscopesbyvivian.com/uploads/1/3/1/8/131856883/2911955.pdf
    • http://files.australiasmedium.com/uploads/1/3/1/4/131454986/fupaxenefif_lifaged_zutesesurison.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/pharmacotherapy_casebook_9th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0862/0701/files/4384950525.pdf
    • https://cdn.shopify.com/s/files/1/0437/3879/2085/files/tilijisemupadezomupux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/63982695792.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/lopuzobunox.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/15198931636.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/cohen_sutherland_line_clipping_algorithm_in_computer_graphics.pdf
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/fusionner_fichier_acrobat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/43560260998.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/67862760002.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/86880310026.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/insanity_max_30_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/6175/4518/files/data_structures_and_algorithms_in_java_goodrich_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/85636265660.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004df4.bin
6cecf1da37dcacdd26a6bd6fda41e43b2eb515311885b273eb670400d41ef1ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DF4 5376 bytes
font_01_sfnt_off00006038.bin
39170954bf9319ece3d5d7e5249e09088b18c900243018d82ea8d80a69fce447
pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 9928 bytes