Malicious PDF — malware analysis report

Static analysis result for SHA-256 38691bf21d8da1d1…

MALICIOUS

PDF

92.4 KB Created: 2020-08-23 07:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b5828d61e72d4e5c225be0c4c7e5b9e SHA-1: 1f788b9b967630b21bf0e8cb572e048791eb9756 SHA-256: 38691bf21d8da1d19af97dad6b3a9a21a153ae9beeadb22fad75a95ec49b2744
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a social engineering lure to download a PDF. 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=characteristics+of+genetic+code+pdf
    • http://files.darlisecafe.com/uploads/1/3/0/7/130738765/womujevemo.pdf
    • http://files.raffles-galore.com/uploads/1/3/1/6/131637570/b46d65adcef53e5.pdf
    • http://tijonenug.visionworksmultimedia.com/uploads/1/3/1/4/131483281/6851418.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/rubelibisubidise.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/simevitofire.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/16654269862.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/94201268097.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/64581195572.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/sogamikibijoduvewasikeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/lilisete.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/dnd_5e_swashbuckler_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/toyota_camry_haynes_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/atkins_molecules.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/85671643087.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/tusawogapilibefafa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/tegabaxikumarowoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/bwv_552_organ.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_off00011f23.bin
b97053bcdf1def1dd024b10e8f2c62b87d6a60473116283380e06000ece50703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F23 5292 bytes
font_01_sfnt_off00013117.bin
421122f2ea22df9f6f9768f48821d6bd955e1845524bc2b6c9dde0b9216a6e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13117 16788 bytes

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