Malicious PDF — malware analysis report

Static analysis result for SHA-256 594e860503befa0b…

MALICIOUS

PDF

44.1 KB Created: 2020-08-09 17:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 003549d21e02153e72685fea63b658d8 SHA-1: 67df3980642906d9e593bc9c47acc87fabe13273 SHA-256: 594e860503befa0b83c52310fc7c9d4388feb130bfe0c2346f820863357ed958
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=schema+des+amplificateurs+de+puissance+montage+pdf', which is a primary indicator of malicious intent. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or to download further malware.

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.ru/pify?keyword=schema+des+amplificateurs+de+puissance+montage+pdf
    • http://files.tibetanbuddhismsatx.com/uploads/1/3/1/6/131606789/navuvadi.pdf
    • http://files.gtecodev.com/uploads/1/3/2/6/132682892/muxizovobujaw-tijidom-merodeku.pdf
    • http://files.bayareamuslimtherapists.org/uploads/1/3/1/4/131438071/maweneduribuxadi.pdf
    • http://files.centenarylittleathletics.com/uploads/1/3/1/8/131871786/c43f1a3f66f.pdf
    • http://files.lukefranco.org/uploads/1/3/1/4/131408928/f1f9717b9b2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/zanivapadopiwuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/vurodanuser.pdf
    • https://cdn.shopify.com/s/files/1/0434/5328/4519/files/materials_science_and_engineering_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/3636/8283/files/34809389187.pdf
    • https://cdn.shopify.com/s/files/1/0432/2154/9217/files/coordinate_grid.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/tixutugosowekene.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/xurepagivexowoxuxojijix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45865267400.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2657/files/advanced_bushcraft_101.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/povodanunubegij.pdf
    • https://cdn.shopify.com/s/files/1/0428/8633/2575/files/thoth_emerald_tablets.pdf
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/jamuseloxira.pdf
    • https://cdn.shopify.com/s/files/1/0433/9603/8812/files/53623533016.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_off00006974.bin
4dc61ac1c4465f67e62026c12dc4d6702498c2486785675a21801aefb68d7edd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5672 bytes
font_01_sfnt_off00007c95.bin
d291b592a5f2909e4ce2e14575f78c1e2fde7451a4b130e180692467798186c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C95 11612 bytes