Malicious PDF — malware analysis report

Static analysis result for SHA-256 268a234b9df9f202…

MALICIOUS

PDF

45.8 KB Created: 2020-07-24 01:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d1773ebcdb877d47e5c344f0fbe85e3 SHA-1: a8cff12129df8af06a86b438ea71024fa8c75a53 SHA-256: 268a234b9df9f2022382743d01b2338e6c0ea0b795b2fa9370ff3942ff38e121
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to 'Hurricane Katrina tracking lab answers' and embeds a large number of external links. One of these links points to a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including one to a malicious redirector, strongly suggests a phishing or redirection attack. The file is identified as a PDF, and the heuristics indicate it's a malicious redirector and a link farm.

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=hurricane+katrina+tracking+lab+answers
    • http://files.lgcryogenics.com/uploads/1/3/1/4/131483275/356f27b340a203a.pdf
    • http://files.davidlouismarino.com/uploads/1/3/0/9/130969800/1599969.pdf
    • http://files.bellamachines.com/uploads/1/3/1/3/131380466/muwiwo_zugawobixade_pumusunazo.pdf
    • http://files.hirechase.com/uploads/1/3/0/8/130813094/lubakatam.pdf
    • http://files.bellamachines.com/uploads/1/3/1/3/131380466/muw
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/nefisoxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/5357/9430/files/52957560009.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9452/files/jonomubomomasoxirumu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/96278491374.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/dopikapetixidasanodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/nerivaxinimulozozuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/vudakajomazegadamekaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/12452308359.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/somaribi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/28068970705.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/nafizofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/4977089875.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/84270325624.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_off0000765f.bin
124b901fe9f62032a9bc4a796592960c94696766c50d16a7494e92aabd04677d
pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 4996 bytes
font_01_sfnt_off00008777.bin
793eff097ca770805af5eb80e6df8acc5e7f3c2be5c4cc5a87a1922515079147
pdf-font-stream PDF embedded font (sfnt) at offset 0x8777 10088 bytes