Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a9ee8bc52501b07…

MALICIOUS

PDF

43.6 KB Created: 2020-08-25 02:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c7853afb20df9799a74e1e151ad355 SHA-1: 5f034e626c8f95f8ca9435f764fa51d3ea449cbe SHA-256: 4a9ee8bc52501b073ab92dc495f20408d473bd38866ebeffa563312039259d0a
120 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 potentially malicious redirectors. One such redirector is https://ttraff.cc/pify?keyword=history+channel+salem+witch+trials+answers, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external content. The presence of numerous PDF links, including those hosted on shopify.com, indicates a link farm strategy 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.cc/pify?keyword=history+channel+salem+witch+trials+answers
    • http://gabizafix.techniquevaulting.net/uploads/1/3/0/7/130738799/1a5cd.pdf
    • http://kireb.viviembellish.com/uploads/1/3/0/9/130969483/buxoziritoj-latejapinef.pdf
    • http://xonenu.triplehhunting.com/uploads/1/3/0/9/130969754/7204285.pdf
    • http://veroxa.ernst-arch.com/uploads/1/3/0/7/130776132/b881083659.pdf
    • http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.pdf
    • https://cdn.shopify.com/s/files/1/0436/7482/8953/files/nalelew.pdf
    • https://cdn.shopify.com/s/files/1/0434/2893/7880/files/orbit_water_timer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/oculus_quest_adb_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0435/6489/2323/files/24063636745.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/lacrosse_rules.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonamov.pdf
    • https://cdn.shopify.com/s/files/1/0437/5891/1649/files/wodetegekikozorupe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/pomekelivulajajul.pdf
    • https://cdn.shopify.com/s/files/1/0428/8954/3836/files/xikurifugan.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_off00006cde.bin
57178043b0d013a174651ec682012e0a48d8e28105586276d67bff96705c2c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDE 5192 bytes
font_01_sfnt_off00007e69.bin
ddf49475d86231c790873b48d960226d65a6d5df4a0ab38096bf69005db2e96f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E69 10312 bytes

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