Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec5bfb0228ddf85…

MALICIOUS

PDF

39.9 KB Created: 2020-08-07 07:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1aaf0e616c13a867d300939aa8eba73 SHA-1: 58cb3efc5012e2e3e53849eafa4dd31855cdbc4d SHA-256: 2ec5bfb0228ddf85fbf33b26696daf7fa9aa60ee75a71c050df65311b7e9a892
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though malformed, contains the same URL as the malicious redirector, suggesting the intent is to lure the user to this malicious site. 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.cc/pify?keyword=role+of+commercial+banks+in+economic+development+of+pakistan+pdf
    • http://kavuvum.actonindoortennisbubble.com/uploads/1/3/1/4/131453850/e2caffe.pdf
    • http://zegew.palmettoeap.com/uploads/1/3/0/9/130969754/maragijukugodevuz.pdf
    • http://files.crunchychristianmama.com/uploads/1/3/1/4/131406403/d6fdec0186737dc.pdf
    • http://files.debbiegouldenart.co.uk/uploads/1/3/0/9/130968968/79cc5d6216e5.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/jugekifeledarakeruzanirez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/wulelin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/tuwadutir.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/financial_management_capital_budgeting.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/18243640748.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/44488688974.pdf
    • https://cdn.shopify.com/s/files/1/0433/9164/7894/files/jipenop.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/circle_with_a_dot_in_the_middle.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/29728314936.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/texajepidikakebenaxumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/40296313748.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5209/files/vapukukanaze.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_off00005c01.bin
ae138d5a7fb038aee80ec7772d48f22e82c5a6c9ec092ae0033f19632c12d649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C01 5572 bytes
font_01_sfnt_off00006ee4.bin
4a36a1d7e6809350af2c0e44d7749b7302b5b5eeaa423918b580e64d57109007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE4 10344 bytes

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