Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cde406959e2a574…

MALICIOUS

PDF

43.4 KB Created: 2020-08-01 03:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c8a69f2057df723a6a66cc098d9ab5 SHA-1: eed6c4854cea08bc54b8d2af4b63c9309ce9fc4b SHA-256: 1cde406959e2a5749f4f40ae7b7d9a3fbab37dda6a1ed896c6f4d3b25e9b7afc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates a malicious redirector link was found, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to malicious infrastructure under the guise of providing a tutorial. The presence of numerous links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL.

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=skyrim+creation+kit+tutorial
    • http://files.sharadslunchbox.com/uploads/1/3/1/3/131397973/tigib.pdf
    • http://files.briankogelmann.com/uploads/1/3/2/7/132712206/6514665.pdf
    • http://files.boulderjunctionwifishingguide.com/uploads/1/3/0/8/130814290/4990f.pdf
    • http://files.gardenclubofyarmouth.org/uploads/1/3/1/4/131453698/zelire.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/38064352933.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/gixujemuzafegutosawixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/6389295860.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/93029029852.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/pejinuparozave.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/55147743064.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/nepadawoped.pdf
    • https://cdn.shopify.com/s/files/1/0429/8312/9251/files/29860622890.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/nufagapivo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3831/files/zonaviwinaxufadenagesijim.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/1529451859.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.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_off00006d56.bin
14ce7cd6bfcf49a4aff0cab1558c276f5b88bc5da924ed5c71a079d16bcda62b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 5036 bytes
font_01_sfnt_off00007e6e.bin
490b10940e9e75fe970f29fd63112314d448ad360f66fcb26561b73f1da4d7ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6E 10144 bytes

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