Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f4915f32569e431…

MALICIOUS

PDF

60.2 KB Created: 2020-08-01 17:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c0fb2b13c3fb423d10322d498d97a4c SHA-1: 89aa63e88832ff71e206c6207182eb1d5448fd57 SHA-256: 8f4915f32569e431e9e25d071426cdb260cfd8d117edfcbe3a82317b6b046592
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=loose+star+wars+figure+price+guide`. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=loose+star+wars+figure+price+guide
    • http://files.rufiosrumblings.com/uploads/1/3/0/7/130738641/fanekadarub_tudofun.pdf
    • http://files.helengblake.com/uploads/1/3/1/3/131384256/77e9b8744c.pdf
    • http://files.recorderstands.com/uploads/1/3/1/1/131164394/1681985.pdf
    • http://files.patriotplayhouse.org/uploads/1/3/1/0/131071253/ginap.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7688/files/14108337469.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/2492983435.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/6738679603.pdf
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/defuzaxujivur.pdf
    • https://cdn.shopify.com/s/files/1/0436/5513/5390/files/72286074243.pdf
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/17899035419.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/juxizabomidomakedixiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/5916333535.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/sufow.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/pesov.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/
    • https://cdn.shopify.com/s/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a25b.bin
68f1bc4f3c4d827ea0cf5048f6bc265f4a514393b4acb8a8db0f3a2bf3fbc16a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA25B 5324 bytes
font_01_sfnt_off0000b4a3.bin
845eecb706456f6edc891c7c735d63414ea17365a61256ed91e0fc7a5a9d9552		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A3 15092 bytes

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