Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a2e14af5715b08…

MALICIOUS

PDF

41.6 KB Created: 2020-09-07 02:27:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 509e0352201ea8498adbabf02c29165b SHA-1: 271d4cebf9bff212325b035ef69064a2bd20e116 SHA-256: 41a2e14af5715b0833a9f0493b5ff97b5530ba5eba39829effad5cee70205ade
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Microsoft adobe flash player 10. 1 free' and a URL that appears to be a lure for downloading potentially unwanted or malicious software. The presence of a link farm further suggests an attempt to distribute malicious content.

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.link/wix?keyword=microsoft+adobe+flash+player+10.+1+free
    • https://static.usrfiles.com/ugd/ade4e6_5919b0ba3a88420fb045ef21994124b5.pdf
    • https://static.usrfiles.com/ugd/cb2bed_ae461ef65a62405591d36b9400027760.pdf
    • https://static.usrfiles.com/ugd/ca300b_a6b3a7b450624eb79665a4b6a129b577.pdf
    • https://static.usrfiles.com/ugd/c7a620_e459a149701e434fb1c1f22ba0895ee8.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/jobumolelezez.pdf
    • https://cdn.shopify.com/s/files/1/0443/2130/8828/files/advanced_mathematical_programming.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2080/files/46316674776.pdf
    • https://static.usrfiles.com/ugd/2274a7_91efb2d579fa40a399f36c93718739b4.pdf
    • https://static.usrfiles.com/ugd/440e29_e812475047ed425596165c44577ca13e.pdf
    • https://static.usrfiles.com/ugd/868b90_e8abe838e6cf4247b55cb552b83eb5e5.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/98894937478.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/lutheranism_vs_catholicism_chart.pdf
    • https://cdn.shopify.com/s/files/1/0460/7098/8964/files/ek_dina_bhole_bhandari_bhajan.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_off000061e4.bin
ae836ef17240f3fdade36265593cf4e3c8444c90e585ad7922421c64b4d9acac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E4 5716 bytes
font_01_sfnt_off0000755f.bin
400a3a968d45205f1178c9a5aef6c0212e5e5ca4a1084b25df9f519096979179		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 10668 bytes

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