Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e900c58f21fa4d…

MALICIOUS

PDF

39.1 KB Created: 2020-08-03 05:12:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 534d561fea4c9935db13ddda432e0125 SHA-1: c5264b2e0502c30802c47f4d20a3e3c3390654de SHA-256: 58e900c58f21fa4d45f1214e4b7d25725871aabf3aeb713349ed48dfd98cbff4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=map+clues+osrs'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. While the document body is heavily obfuscated, the presence of the malicious redirector URL is the primary indicator of malicious intent. No scripts were extracted from this sample.

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=map+clues+osrs
    • http://files.tryoungcrew144.com/uploads/1/3/1/3/131378771/gajebirakafepidaja.pdf
    • http://files.sarahlandyoga.com/uploads/1/3/2/8/132814048/3404614.pdf
    • http://ravirizok.clermontlawnservice.com/uploads/1/3/2/7/132740892/lileleduxe_mazaxepunure_lovegila_kamarajuvalik.pdf
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/83209579924.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39646295774.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/vim_config_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/8550320882.pdf
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/84119321797.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/dafisifuserunetime.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/wezexub.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/24721147225.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/black_and_decker_18v_weed_eater.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_off00005d3c.bin
550e90d76df94dc08c5a31fa48f4627d256d3a076563e1562f7a466d843c3dfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3C 4932 bytes
font_01_sfnt_off00006e19.bin
81df7bc1b1b1030e08d00680fc14a1b708e0a7b3f9ed1995b071c8e41914cb92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 9940 bytes

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