Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a36005847bd9ab5…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 14:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f533e2ede9aa4358f39d77944c7b742d SHA-1: ece47bb015623d00df743eaa323622b562eab087 SHA-256: 2a36005847bd9ab53eab9e3615505e68beebe4b65ce3ea0e6788c19ef25b3245
128 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. One critical heuristic indicates a malicious redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm designed to obscure the final malicious destination. The presence of a visual download button further supports a lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=semicolon+and+colon+worksheet+with+a
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/dreambox_learning_android_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1349/files/sociolinguistics_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/18722332260.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7207/files/20619607607.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/byomkesh_bakshi_stories.pdf
    • https://static.usrfiles.com/ugd/067ecb_5b0a8e9e9e3e4599b8843d357fad2c68.pdf
    • https://static.usrfiles.com/ugd/67e251_0b73e7f14fb24989b94779bc5dc83370.pdf
    • https://static.usrfiles.com/ugd/b7ed05_f707e157754244ed88b6854f6d55431b.pdf
    • https://static.usrfiles.com/ugd/97493d_081eec8cc3dd4dc3b45a859715f418da.pdf
    • https://static.usrfiles.com/ugd/b8c837_e73519f9ed3340439bb3c4590368a882.pdf
    • https://static.usrfiles.com/ugd/b8c837_10ab946123994a39810bca2c818de36d.pdf
    • https://static.usrfiles.com/ugd/8b49c6_d1bf0d26e6fb4c50bebb86d35ff66a26.pdf
    • https://static.usrfiles.com/ugd/b8c837_50de56314d6148a9a7aeff2e45a672c9.pdf
    • https://static.usrfiles.com/ugd/79e0dc_c07146d4967543be86a38b6003180fae.pdf
    • https://static.usrfiles.com/ugd/b8c837_e60a3f6fed6a4e6895ae32bda2748de4.pdf
    • https://static.usrfiles.com/ugd/253000_70ab36a401954948bb9dfcf218bc53f8.pdf
    • https://static.usrfiles.com/ugd/ab0441_0e302b03a3cd43169cc033fc1655c20d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8beac420ae34b00a7d8ce0cfe9069f3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005006.bin
b011a88cc23ac26ad4e77011d514dd385d44773c9dca2295c18cb5c42f572df2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5006 5228 bytes
font_01_sfnt_off0000619d.bin
96a97b3884dda2b0c2250455a9cddf342b5086f0dcfd1b0f6fd496791ce3cf9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 10816 bytes
font_02_sfnt_off0000861c.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 4324 bytes

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