Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cd54720ccdf234…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 21:38:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a64714cac0ac752f27690c2114658c27 SHA-1: c2af975bac163668cf7e76983bbbda7700850bc1 SHA-256: e0cd54720ccdf234733dc1b6c23f376e32f3eef5f36ff6c7fd33c9cc490a596b
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the URL that initiates the redirection. This suggests a lure to download a template, which instead leads to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=excel+gantt+chart+template+hourly
    • http://files.littleannadesigns.com/uploads/1/3/1/4/131437513/ramizat.pdf
    • http://kuxiro.miweddingpainter.com/uploads/1/3/2/8/132815806/7847985.pdf
    • http://jikodu.hall-farms.com/uploads/1/3/0/9/130969408/xoxug.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/fenobasarewetemugiwuzo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3174/1095/files/86267996349.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/loop_antenna_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/84767482707.pdf
    • https://cdn.shopify.com/s/files/1/0453/9387/1016/files/52947867724.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4573/files/85315506831.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/49708745663.pdf
    • https://cdn.shopify.com/s/files/1/0449/2450/2171/files/minecraft_forge_11._2.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/wejofilugawemunizukuseju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/reading_books_for_3rd_grade.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_off00005f91.bin
e9c18af070f53c16b752354f9ede81dba64706fa45f052e39681781196ad4b5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 5296 bytes
font_01_sfnt_off00007175.bin
6122ba1f9faf3d99d590fce193d2622aa3be4295175ea4e7403425259b57f8ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 9504 bytes

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