Malicious PDF — malware analysis report

Static analysis result for SHA-256 5377a9a608500d9c…

MALICIOUS

PDF

39.1 KB Created: 2020-08-02 16:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c93fa19c355e7e35ce3745f3237b4d6 SHA-1: f41711f8ac745b7f610bf0fbb2d5c7d876d359f1 SHA-256: 5377a9a608500d9c993bf52db8eb5e844f6de6a1aae256f8d0f918ad519d14d5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=razer+chroma+world+of+warcraft, which likely serves to obscure the ultimate destination of the attack. The document body itself is heavily obfuscated and contains references to the redirector URL and other benign-looking Shopify links, suggesting a lure to trick users into clicking through to a malicious site.

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=razer+chroma+world+of+warcraft
    • http://files.cowboys4heroes.com/uploads/1/3/0/7/130776645/c7c9aa8f.pdf
    • http://files.whitegravybeats.com/uploads/1/3/1/4/131406432/462703.pdf
    • http://files.rempahdapur.shop/uploads/1/3/1/4/131438449/7438727.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4354/files/21317820185.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/34506019252.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/hunter_thermostat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/dejupawugezekikag.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/97170955544.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/zulun.pdf
    • https://cdn.shopify.com/s/files/1/0437/7526/2869/files/69543338383.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/litaju.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2153/files/work_excuse_letter.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/96260356505.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.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_off000059b0.bin
aafce97b609fa9abc4e58063325684442d211e8f53a715786d655a951ddca89f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B0 5232 bytes
font_01_sfnt_off00006b72.bin
bf8dd37896d71c392eefe1b6290111eb8456e9ed7e9f4c15c828d39c5a65c420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 10612 bytes

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