Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4afb94e3040c9d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 21:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d907cd8e04a94c335814b7c8ac21a6f SHA-1: c477dfa576b79b74601b96153f1b4a95b1133ddc SHA-256: 1a4afb94e3040c9d295b6d403546914ab5a670d52dd7f0a41f6998d46f231e72
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, identified as a link farm. One of these links, https://ttraff.cc/pify?keyword=simple+messianic+passover+haggadah+pdf, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The file was generated using wkhtmltopdf, a tool sometimes abused for creating malicious documents.

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=simple+messianic+passover+haggadah+pdf
    • http://files.firstrentalandsales.com/uploads/1/3/1/4/131453136/bikuvewifebej.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/mort_myre_fungus.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/dowuvapipebejo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5775/6825/files/xukazotov.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/75185302824.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50878135704.pdf
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/33368561626.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/8025521364.pdf
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/vijonenuzarutegiwanar.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/vocabulary_learning_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0432/8187/5104/files/delivery_manager_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/29271257944.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/arithmetic_and_reasoning_questions_and_answers_in_english.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_off00005ebc.bin
0ce527ffe2f19445e5d8177fdf5f9f328036ba6cfbf4009bf0a45714ab623191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBC 5732 bytes
font_01_sfnt_off00007209.bin
9c7d6232178a2520ab98308c021b11864b7267fdaa730da8108094d61eeedee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 10120 bytes

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