Malicious PDF — malware analysis report

Static analysis result for SHA-256 feead322f24a9c9c…

MALICIOUS

PDF

43.4 KB Created: 2020-09-02 15:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d5992ec4bc2c7d78c5d662a968acc34 SHA-1: 37b6649af4be45536394c5a29a2f8d01603e975c SHA-256: feead322f24a9c9c779acaad3beafce43418f8b0ee1f3da80e7870180d1b92af
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to benign-looking PDFs hosted on Shopify and static.usrfiles.com. However, one critical heuristic firing indicates a direct link to a known malicious redirector at https://ttraff.club/wix?keyword=lagu+bintang+di+surga+cover+akustik. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware delivery.

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.club/wix?keyword=lagu+bintang+di+surga+cover+akustik
    • https://static.usrfiles.com/ugd/1e32c2_dd74c1bf4a49496f938eef8cc4e1e7b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_3010b412e38b43359fd62b332d980e0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a6bda7af1f449e880e4ca11bba2ed33.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/hc201_humidity_sensor_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.pdf
    • https://static.usrfiles.com/ugd/43d598_6444ead61300417e974f3441eff027e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_88492bafbfee4ccebaf47e4fe01bd625.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5899/files/jrue_holiday_injury_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/46727842453.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_off000055db.bin
c42e7610623393037265e48a938950d77b7e63cb59bae616619c661585374003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55DB 5280 bytes
font_01_sfnt_off000067e7.bin
27d605148dd472c9fcdbef7332059faadc2f8764675a93e18a24c4aa2e72c840		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 10404 bytes
font_02_sfnt_off00008b98.bin
a109d5cc1a8599929bd7702a943337bd153faf2776ff4e30ac39a15e38c17cef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 16204 bytes

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