Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b494f803d191f87…

MALICIOUS

PDF

45.1 KB Created: 2020-09-17 07:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 010d990b43f58ffa1dc477353c006320 SHA-1: 01baf5fb2d91dd71ebb50586f35999e3bf3196b1 SHA-256: 4b494f803d191f87ca019494a106ce5049d66a3b2be8519c7228824061a3bab0
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=ms+sql+manual+pdf, which is identified as a malicious redirector. The presence of numerous external links, including the one pointing to ttraff.com, indicates an attempt to direct users to potentially harmful content.

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.com/wix?keyword=ms+sql+manual+pdf
    • https://7607c311-b738-467b-88ec-f6322e48ec58.filesusr.com/ugd/c068f8_afe724ca245244d78f2602e819fb0bb6.pdf?index=true
    • https://10f46a0a-7481-4675-a3d2-bd8033805838.filesusr.com/ugd/8a4248_3e670637b4e740b68c1c07c4bba187a3.pdf?index=true
    • https://d47d3a32-f1d0-4c8e-8ae4-74a50c86b23b.filesusr.com/ugd/136d3d_aac5219dae08400daebfb0b6de8905a8.pdf?index=true
    • https://a1c8dd70-2d16-4aa5-a90f-ddfff3197d92.filesusr.com/ugd/359e64_cf19ba7b57054920b805543a67130913.pdf?index=true
    • https://1645f28b-7898-4744-a424-91edc290e74c.filesusr.com/ugd/9ea91e_0463d5f8a27842548fea5e5ec7060e38.pdf?index=true
    • https://cbbb2af7-fba8-4217-a751-c703f3d607eb.filesusr.com/ugd/26481d_5780972451a14740abe14f9fe2683447.pdf?index=true
    • https://9cf33456-be59-4309-82d9-1e279c48c476.filesusr.com/ugd/7ba596_190b5cdbad8a4043a69bc13fb699e4a5.pdf?index=true
    • https://6d472709-5346-4e80-a553-abe6d98919dd.filesusr.com/ugd/625844_600437cc6b5148978cefa35f2ac91d6b.pdf?index=true
    • https://477acf64-46d1-4c30-921e-ffa962c68a13.filesusr.com/ugd/d2cc1f_7d8bdf8cec5940619a9e62fdb71490d9.pdf?index=true
    • https://a396d42f-cb4e-4a2c-89f4-17d994967ef7.filesusr.com/ugd/50de67_7bbec5ba084f413f8cf5cf1de1c224b6.pdf?index=true
    • https://2d665d28-946b-40c2-80d2-c8239fce0fc0.filesusr.com/ugd/98e2de_51878cfb301946a0b3cea2364e8f8202.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/5313/7563/files/theme_party_invitation_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/nopapowoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/lg_optimus_l70_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/beginner_gym_program.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_off0000625e.bin
021bcfba0a0c1a4acbe764259391d90502a6005ab5d54f4211e7e11f03915add		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 3468 bytes
font_01_sfnt_off00006ed4.bin
0e1aa9dc87af2a9b2dbdbe70e975335791274901abae08303ef113b9e882affc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED4 5224 bytes
font_02_sfnt_off00008092.bin
15a8e2e19abe204cf8d073e05273bf3946adb1e53ca5cda932f7d1eaa3c0624b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8092 11384 bytes

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