Malicious PDF — malware analysis report

Static analysis result for SHA-256 213cf34513e7ebf4…

MALICIOUS

PDF

55.4 KB Created: 2020-08-12 06:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f6dd1cf0cbbf56b8e9d429a372ef7e SHA-1: 83122751a546955e3ec2743fe9cc3f7ce4929985 SHA-256: 213cf34513e7ebf4eed18c596308a611febc79e1fe2242a3f3b4ef7c6a7fb740
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body contains a URL that points to a known malicious redirector, and numerous other links hosted on Shopify and other domains. These links are likely intended to lead users to malicious content or for SEO manipulation.

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=collection+in+java+pdf+interview+question
    • http://files.bounceslidepartyinflatables.com/uploads/1/3/1/1/131164372/demagijefofutuneneze.pdf
    • http://files.securingourfoodsupplysurf.org/uploads/1/3/1/8/131856706/lolexisituv.pdf
    • http://files.cepohio.com/uploads/1/3/2/3/132303238/8834995.pdf
    • https://cdn.shopify.com/s/files/1/0437/1451/1001/files/iicrc_s520_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/petawesabitorixopuloj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/kedefulixikosubogofimu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/bisitipiwivewujigebibun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/engineering_maths_formulas_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4167/files/63169122946.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/discord_twitter_webhook.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/psychological_assessment_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/96719800924.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/72853550205.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/76650697808.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/swagger_ui_tutorial.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_off00009a11.bin
2e08da30a0e84104a069d32b5dd63e63e8505110e90b509cbf9a4b0dbceec998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A11 5408 bytes
font_01_sfnt_off0000ac94.bin
a727c43bb9f04fb5d3202e7ba4ee0b1e5702d8a270aa8c46763624c266f7f251		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC94 10516 bytes

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