Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3960a1bad04c7f…

MALICIOUS

PDF

47.6 KB Created: 2020-08-30 19:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 563160e8d7643c8a561f50b1ee6ae211 SHA-1: 35c8a7a0c48d368e3ae40699337cf03868d3b1d8 SHA-256: ed3960a1bad04c7f8dfde97d398c941495515a68cfbb61b5c5252bbbaa949fde
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'binomial models in finance pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to attract victims. The primary malicious IOC is the redirector URL.

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=binomial+models+in+finance+pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/12032048051.pdf
    • https://cdn.shopify.com/s/files/1/0433/4010/3845/files/encyclopedia_of_automotive_engineering_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/memonowiwoxananonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/pususodakukexokunob.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/sulesolozobizurik.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1269/files/death_note_original_soundtracks.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/island_of_adventure_park_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/english_reading_comprehension_test_b1.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5091/files/spelling_test_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0437/4514/9079/files/baofeng_uv-_82_manual_greek.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/56657536247.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_off000066d6.bin
981e5ad9c7592e237ae8b37393b7aa20e9bb0bf6fd8244ce525cda4f0523a7bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D6 5256 bytes
font_01_sfnt_off0000789b.bin
f2431b56fa7f1270216fe4acced87d76607ea13d8c8ca56b3a1a6800516abd97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 10656 bytes
font_02_sfnt_off00009cf1.bin
8407df14a2738efe3d2aaec449fc7b67f888222f7621c5c094f7d2f3a91843ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF1 16064 bytes

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