Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a44404b01e35f0e…

MALICIOUS

PDF

41.8 KB Created: 2020-09-17 09:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73d2b0a7fc0d0a1f8f8fe2d36753323f SHA-1: b7f14a467b9af5b4085614b56f59de8a5f30aff8 SHA-256: 8a44404b01e35f0e6aec80a2f2ff632c6c3d898eb9e07823a3f60d1471e165e8
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Megaman project x 2' and the malicious redirector URL, suggesting a lure for a fake download. The PDF also contains numerous links to external PDFs hosted on Shopify and other domains, likely part of a link farm to improve search engine ranking for malicious content.

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.link/pify?keyword=megaman+project+x+2
    • http://mewopad.nerdynicodemus.com/uploads/1/3/0/7/130738568/17f28.pdf
    • http://files.prettycardsandmore.com/uploads/1/3/2/3/132302892/josenolufepu_xodanakiza_kepinilebigoma.pdf
    • http://files.dzobel.com/uploads/1/3/0/7/130740078/9359137.pdf
    • http://files.mandarin4u-sd.com/uploads/1/3/1/3/131398052/67dce41.pdf
    • http://tawizozir.dressingroompoetryjournal.com/uploads/1/3/2/6/132683169/rafipaban_linikisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1287/4662/files/process_assessment_and_improvement.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1741554469.pdf
    • https://cdn.shopify.com/s/files/1/0432/0562/3972/files/ultherapy_hifu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9466/1538/files/17366172438.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/14921279223.pdf
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/public_policy_making_models.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/99200581864.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/puzupipivogigokuboximub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/77427357989.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/fowirowob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2500557594.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_off0000626b.bin
6a8cce4fa4b9aaaa0abccff61c17092daaf4ed5e59a7645c52300ea2412c6ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626B 5324 bytes
font_01_sfnt_off0000748e.bin
fbe48fc4b9ebe57abdb44c43769f2a9f75d50ae0b2840585b3ed31c112783041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 11932 bytes

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