Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe81ad483664a53f…

MALICIOUS

PDF

40.3 KB Created: 2020-09-01 18:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e95bb4383c9e701e0da11a0b39d101 SHA-1: b925c0b2a5caa7f96561b048e2128c5a313f2f3c SHA-256: fe81ad483664a53f7a8cf15f5d2094010cc56258b8cb1e6900f42390edd6f50a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'mac os x software free' and a URL that appears to be a lure. The PDF also contains a large number of embedded links, many of which point to Shopify, but the primary malicious link is to ttraff.com. 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.com/wix?keyword=mac+os+x+software++free
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/noes_bsicas_de_mecnica_automotiva_senai.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/96118835027.pdf
    • https://cdn.shopify.com/s/files/1/0432/3177/2835/files/91391041192.pdf
    • https://static.usrfiles.com/ugd/b85eb0_0aaf250cf6884672a4cca21007f501f6.pdf
    • https://static.usrfiles.com/ugd/c1108c_e9228f6fb9c3482db81f26bf237383fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_84925f555f054e87bcf7bacf60537fb1.pdf
    • https://static.usrfiles.com/ugd/e73fea_1364eabd4feb4efeb907795a581c2ea2.pdf
    • https://static.usrfiles.com/ugd/8c0e65_6d05f9a6efd34ae1a595414f8d74cc40.pdf
    • https://static.usrfiles.com/ugd/37428b_969c36ab83cf4520955171766a01d11b.pdf
    • https://static.usrfiles.com/ugd/de02f3_2b30666e560f416f932fcf200184f7b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d37f782aa0d8453083f83d42f24afbc5.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5721da99c474acd9b377d6813ebcd16.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_off000060ef.bin
7ccfb1334922ad2186ab2ca137ae89f8a038d936103557fd0243c689d8a4e016		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 5008 bytes
font_01_sfnt_off00007226.bin
113fbb144117bf3fb2da2f570a836ec6497c73403f378166b6b55ed7c35172b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 10144 bytes

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