Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d8da516d66cbdc…

MALICIOUS

PDF

55.4 KB Created: 2020-08-27 21:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 912eba71e93793610c4b359bfbb91ae1 SHA-1: 7302c3469b48e06c76a161a2a6fe7e40135952ea SHA-256: 79d8da516d66cbdc30977e23814d23735328c3dc8c4a58137ae7eb37ff6db73e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is a redirector that likely leads to further malicious content or phishing pages.

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/pify?keyword=hungarian+pa+63+magazine
    • http://ketator.heritagefloristcortland.com/uploads/1/3/1/4/131453558/6172085.pdf
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/neurology_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0462/7736/1824/files/32626800837.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/officejet_pro_8600_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/administrao_de_medicamentos_via_parenteral.pdf
    • https://cdn.shopify.com/s/files/1/0450/4076/3030/files/blocking_queue_implementation_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/tafsir_surat_al_waqiah.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/39132240983.pdf
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/lazirevebizupapefuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/pujojivap.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/65916808043.pdf
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/voxololugofuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/atomic_structure_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/jio_phone_music_call.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_off000078f9.bin
6fe33b3d37e7120eaa8ab5e4e8b0e4ebfe6f9398465b91e7012167fea6ab9e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F9 5260 bytes
font_01_sfnt_off00008aca.bin
7e11c6b8d9031991918b4f3ed33cfdf2cfb5ce1c1387d3636521476549179f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 16164 bytes
font_02_sfnt_off0000bc4f.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4F 16060 bytes

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