Malicious PDF — malware analysis report

Static analysis result for SHA-256 839bce12fc92db37…

MALICIOUS

PDF

44.4 KB Created: 2020-09-19 10:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e94edd2aed7607e9eb37ceb962ad4b4 SHA-1: 6bd90d0cbbfb74087130466e46f5df6ac6f09cf5 SHA-256: 839bce12fc92db37ad510f23eb133389c29d261141bc6fe3d8615c16fd5f16bd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=sniper+3d+cheat+codes+android+2020'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are also PDFs. The primary intent appears to be redirecting the user to malicious infrastructure.

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.me/wix?keyword=sniper+3d+cheat+codes+android+2020
    • http://pomolupe.deuceswildcarshow.com/uploads/1/3/0/7/130740080/86673.pdf
    • http://diruteroj.ruthierosephotography.com/uploads/1/3/1/3/131381302/lerovazu-wiwifajawaso.pdf
    • http://nabaridur.stephenfbaccari.com/uploads/1/3/0/7/130776485/madorifamez-wujemuwageju-kukofidotu.pdf
    • https://30007a87-6693-4538-8754-16c40d4b16cb.filesusr.com/ugd/003b86_94ca3da38fab4b99b688c63f373b2f32.pdf?index=true
    • https://e810cf7b-3453-48c6-be24-f87e973620e0.filesusr.com/ugd/e50c99_013f08794f23433db659f83010185c7e.pdf?index=true
    • https://080ebb8e-f95a-4554-a5b3-73af93b06574.filesusr.com/ugd/b148e5_787159a9dfaa47738ae4a208f662bce1.pdf?index=true
    • https://0f03110f-d0e2-4a4f-9f65-46da21908921.filesusr.com/ugd/2e4eb4_80e9d651801448ea903cd2b8707d6d68.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/android_studio_3._3_3._4.pdf
    • https://cdn.shopify.com/s/files/1/0479/6668/3292/files/there_is_there_are_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/96328308715.pdf
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/articles_grammar_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0481/8406/6205/files/62501148579.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/partnership_accounts_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/7014/4158/files/jenasunipaparevizu.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_off00006d16.bin
ed69cab87441ac06ea63fd6a0b13eebeec9e42da5549a8249a782bf7e3f5fbbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 5672 bytes
font_01_sfnt_off00008058.bin
90157fc2308f2276ad0feba9e4d72418d0c639e228e9b4f586160d71597644a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8058 10488 bytes

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