Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9588487c052494…

MALICIOUS

PDF

78.5 KB Created: 2020-09-17 23:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 648451c22b7cf66d97867e1911dfa9b6 SHA-1: 6f508587098ef47f860484bed310b58a15a3e3d8 SHA-256: eb9588487c0524943b018b7589504d1450cef2471ecde1e5c40be36622e668dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, disguised with a lure related to unblocked games. The document body, though heavily obfuscated, contains the same lure and the malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the redirector. No scripts were extracted from this sample, limiting the analysis of its direct execution behavior.

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=unblocked+games+77+don%2527t+whack+your+teacher
    • http://putavu.obsidianrenewables.com/uploads/1/3/1/1/131163774/8547438.pdf
    • http://files.thewonderfuelcompany.co.uk/uploads/1/3/1/6/131636946/jivag-bejen-dukelatepa.pdf
    • http://files.familytimefurniture.com/uploads/1/3/1/4/131452929/9533808.pdf
    • http://zaporawes.academiestjohn.org/uploads/1/3/1/4/131437246/6814025.pdf
    • https://77777a0e-2cb0-4f67-811b-e825d4aabd6e.filesusr.com/ugd/78daac_74d47598dbb74e2a8ebb57d2e1043051.pdf?index=true
    • https://6d472709-5346-4e80-a553-abe6d98919dd.filesusr.com/ugd/625844_600437cc6b5148978cefa35f2ac91d6b.pdf?index=true
    • https://cd951d6d-d2c1-40e7-8eb6-481422aec600.filesusr.com/ugd/54fa57_071e93f90a8d405f8c7f49aab7945b93.pdf?index=true
    • https://48972065-7232-449c-a967-a1fd04974f93.filesusr.com/ugd/4dded2_5862390ff7184612b6b97c53648e956f.pdf?index=true
    • https://075ba500-fbb8-4dff-a306-7fed30005f50.filesusr.com/ugd/c88839_edc8e1bddce940308677210d2e7707d9.pdf?index=true
    • https://4c04382c-1a02-49a4-97eb-b41fcaa867cc.filesusr.com/ugd/de3d83_fb5c792e0b964fda98fe241b842c9bbe.pdf?index=true
    • https://65204386-1ec3-414f-aae2-f956135d2eec.filesusr.com/ugd/fedf23_f571499fec9f4b02900bd4c389ffac67.pdf?index=true
    • https://f4616816-e3f8-4a44-9b9f-829bbeb656de.filesusr.com/ugd/370021_601c81710dfd410c8c98fbe8c9d56b62.pdf?index=true
    • https://9eb06c30-0e8f-4f0b-945b-f2af37a89f24.filesusr.com/ugd/764aaa_4600054b818d461d971153a2414ec8f3.pdf?index=true
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc4a.bin
03b0c0734da0cbea557d7505a94aa227ea7b784a557f26d3e2243cfb18fac850		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4A 6896 bytes
font_01_sfnt_off0000d371.bin
904104d0f3aeee22c86146e7c4ab91e632a2f1b8e74bb297f66c818bd4234f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD371 5688 bytes
font_02_sfnt_off0000e6c2.bin
702826bf390cd59d238e41a8a214ebe4a3c238cf15172b7c351563a1b309d700		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C2 17996 bytes
font_03_sfnt_off00011ddc.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DDC 4324 bytes

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