Malicious PDF — malware analysis report

Static analysis result for SHA-256 f261508a4d589970…

MALICIOUS

PDF

42.9 KB Created: 2020-08-30 01:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b832783d5be50241d087dd1c49005f2 SHA-1: 663aef87e9d5e2087c3df9828b3dd271deba0677 SHA-256: f261508a4d589970c2b531e36fb7011a2c65577215f5b1b26b043a442e47a743
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to a malicious site. The document body, though heavily obfuscated, contains the same lure text and URL. The PDF also hosts a large number of links to benign Shopify-hosted PDFs, likely as part of an SEO link farm to improve the redirector's ranking. No scripts were extracted from this sample.

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/wix?keyword=test+de+creatividad+infantil
    • https://cdn.shopify.com/s/files/1/0434/5643/0230/files/19049759156.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/13415472940.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6849/files/43209157049.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/switzerland_train_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/8781/4044/files/athlean_x_max_shred_free.pdf
    • https://cdn.shopify.com/s/files/1/0461/8236/7386/files/82274378374.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/fiwabezesimufasesux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/adolescent_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/kimesafuto.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/the_power_of_kabbalah_yehuda_berg.pdf
    • https://cdn.shopify.com/s/files/1/0432/3039/6574/files/72512899265.pdf
    • https://static.usrfiles.com/ugd/e3c460_43e28661806c4b00baa0a5d01a096f90.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e726f13ab8c42808e45e892aa7dce36.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bd0d1aa19874c7d9cbbf58e5ae403fd.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_off00005d2b.bin
9d025e9d996f704cc6a7d167570612bdc5c03531a9caf711653b2f3d85d3d351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2B 4700 bytes
font_01_sfnt_off00006d2e.bin
aa19da29bd0bca5f2f4da86c8a9b98b93966534f0819e26d1d92fcd2c97f0ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 10872 bytes
font_02_sfnt_off000090ac.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90AC 4324 bytes

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