Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc592704ffd1de82…

MALICIOUS

PDF

39.5 KB Created: 2020-08-23 03:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1a715a098722199b98da3dfd856b64e SHA-1: 514111ac469ff85937cf94aeb386251904e30fdb SHA-256: fc592704ffd1de82e47a01a81e5db0b4fb112782288998de2cf2fe30f298212e
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=escape+room+game+answers+level+83'. The document body, though heavily obfuscated, contains this URL and also lists numerous other URLs hosted on Shopify, suggesting a link farm or content distribution strategy. The primary malicious intent appears to be directing users to the ttraff.com domain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=escape+room+game+answers+level+83
    • http://files.lubchencomengelab.com/uploads/1/3/1/8/131856188/435583ae57cdf17.pdf
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/87240146832.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/76045681603.pdf
    • https://cdn.shopify.com/s/files/1/0439/0905/4619/files/19045644202.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/log_and_antilog_table_download.pdf
    • https://cdn.shopify.com/s/files/1/0462/8463/6320/files/punokafarip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/87154243141.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/vewudugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/12297408076.pdf
    • https://cdn.shopify.com/s/files/1/0448/5061/0336/files/landlady_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/lemanateburuzonufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/cartoon_font_ttf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/lowes_brunswick_ga.pdf
    • https://cdn.shopify.com/s/files/1/0433/7414/9793/files/biotecnologia_industrial_livro.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_off00004e12.bin
bb25b6a0cc2c2eebd70af0d0fed036b5d714b91eea75a3e08a5ecde12569c2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E12 5380 bytes
font_01_sfnt_off00006050.bin
ca3e78e49f3ecac530788d7e2048db24bd26c6d9b8d439fbc3b0ad13f7bd2f3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 10084 bytes
font_02_sfnt_off000082cd.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 4324 bytes

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