Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad16002c22d0eacf…

MALICIOUS

PDF

62.2 KB Created: 2020-08-12 10:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 046ef94d1108ead35161dd9823486a73 SHA-1: 4107eb2a0b8d8b6de8cb6328b60c9ca18ea03d1b SHA-256: ad16002c22d0eacf5f21d373d8b8622a53f3b53f4dcc84f1670fc32637cf8d27
150 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'medical medium diet plan pdf' and embeds numerous URLs, many pointing to Shopify, likely as part of a link farm. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=medical+medium+diet+plan+pdf
    • http://files.furandwhiskers.co.uk/uploads/1/3/0/7/130775977/733552.pdf
    • http://files.jefferybarbee.com/uploads/1/3/1/6/131606025/totokafeg_pejerifapaze.pdf
    • http://files.scanlonet.org/uploads/1/3/1/4/131453350/gewimasi.pdf
    • http://files.robertfreemanartist.com/uploads/1/3/2/8/132814250/994c73ad71c6.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9175/files/buvexiwanisezufof.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/97709325328.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/33515680694.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/7973458261.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdf
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/reverse_list_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/98160627465.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/zidor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.pdf
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/echo_elevation_worship_chords.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_off0000a97f.bin
afa3c01917d3093d102d474af4aee314bd89df56212c395667878c0aa4d290ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA97F 4804 bytes
font_01_sfnt_off0000b9c4.bin
adec70018bcd4b02f842e8f167003c8bc0d168f9e00612295e2305c4fd76ba74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C4 10380 bytes
font_02_sfnt_off0000dd40.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD40 4324 bytes

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