Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83aa0b0fa6297f3…

MALICIOUS

PDF

36.5 KB Created: 2020-09-19 17:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a6427dc2612a7b7b41588eb6102bc8d SHA-1: d045d8f8501999db0529454a686067fae83818ab SHA-256: e83aa0b0fa6297f3256349dd410d5715d7322546853fb29031779613275e5850
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, 'https://ttraff.me/wix?keyword=nonsense+words+list+7th+grade', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links pointing to external resources, reinforcing the attack pattern of link farming and redirection.

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=nonsense+words+list+7th+grade
    • http://vovako.meredithlubowphd.com/uploads/1/3/1/0/131070491/2991773.pdf
    • http://files.performancestudstars.com/uploads/1/3/1/4/131483138/ditominezif.pdf
    • http://files.surfacedance.com/uploads/1/3/1/4/131437750/megesunox-subesaxigopog-ropole.pdf
    • http://vupaxefed.legacyministries.info/uploads/1/3/1/4/131483245/7674.pdf
    • http://nawajax.frostyvision.com/uploads/1/3/1/6/131636777/fazisizufa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/i_am_number_four_book_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/apologize_piano_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0435/6086/1845/files/pentair_rainbow_300_chlorinator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/html_coding_games.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/vutetanefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/html_input_date_format_w3schools.pdf
    • https://cdn.shopify.com/s/files/1/0433/9541/6213/files/jafebevufubukifopalo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/99583997895.pdf
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/mexejiwutaluduf.pdf
    • https://cdn.shopify.com/s/files/1/0477/1377/9868/files/11728611870.pdf
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/files/10130694265.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/
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f96.bin
9e15b9bfb49a10a62087438b888e0b55e15b630dba606f35559ad88922ddd9d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F96 5228 bytes
font_01_sfnt_off00006172.bin
9d60338adc5f6b3caf40dc5d87c46e8fdae69fd690d15503401dabc615ea8109
pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 9980 bytes