Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfaf11822afe2577…

MALICIOUS

PDF

48.3 KB Created: 2020-08-03 21:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a61018b8947077556ecd9b13ac94427 SHA-1: a0accaea2b3b3368a798fa2e25a0b20f89d6d37f SHA-256: cfaf11822afe2577688101aeddd0a24b8281bc40f20be2bf8a801fdb4af8d91c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=camille+paglia+libros+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the document's primary purpose is to redirect users 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.com/pify?keyword=camille+paglia+libros+pdf
    • http://files.paintbrushpottery.com/uploads/1/3/1/4/131406780/5152196.pdf
    • http://files.pershoregifts.co.uk/uploads/1/3/0/7/130738657/5178082.pdf
    • http://files.andyreimanis.com/uploads/1/3/0/7/130776462/6414413.pdf
    • http://files.onioncreekstore.com/uploads/1/3/1/1/131164260/neparome-naxerezone-kuxuluved-paxix.pdf
    • http://files.alwayslovedal.com/uploads/1/3/2/6/132695470/2746423.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/wogolar.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/last_row_vba.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/tafunejinanororelujifised.pdf
    • https://cdn.shopify.com/s/files/1/0433/8958/3514/files/88733144298.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9815/9769/files/61546126969.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/67259559596.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/48431021179.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/gusokilesujebe.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/67383695223.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/18748946827.pdf
    • https://cdn.shopify.com/s/files/1/0433/2086/9019/files/toduvo.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_off00007deb.bin
81d4678a05feb98d7de8a9f93573c907f26f5193b25d0b1506313906103f6edf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 5404 bytes
font_01_sfnt_off00009026.bin
9d936e7900262f72b7ded35336c00fa1bbe343023f2744f6eabefdea6949376d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9026 10580 bytes

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