Malicious PDF — malware analysis report

Static analysis result for SHA-256 260457929e82c5ff…

MALICIOUS

PDF

45.3 KB Created: 2020-08-31 04:22:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a63dc99e62a4a11a621bd7f292a4b30b SHA-1: 6bc15aaa68cf8eb92b3159bc47ca1297c1a67625 SHA-256: 260457929e82c5ff7878f1e22f78a9332a635e99f56cbe7a621e88e0f9c7e033
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This link is presented within the document body, disguised as a free guide. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The primary malicious IOC is the ttraff.com redirector URL, which is likely used to lead the user to a malicious site.

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=wayfinder%2527+s+guide+to+eberron+free
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/28788966679.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2065/files/aqualink_rs6_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3354/9205/files/9049481995.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2341/files/bogoxoraju.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0429/files/38700903154.pdf
    • https://static.usrfiles.com/ugd/c75f60_2ff89ca748f442a68839e1fe79809d7d.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/radelodogofumevevagese.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/collage_photo_maker_software_free.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_c598a65dfbc94c82b7a6ff423c5c5d7c.pdf
    • https://static.usrfiles.com/ugd/4bb894_2b927e7586e34726b98e9e19fc255a20.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_off000072fa.bin
7c1d3812aa921825db245dfa5dd6715476435ac1f92d11be06b0d00e43bd21e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FA 5332 bytes
font_01_sfnt_off0000853e.bin
8930c0028de4479aa9dd906442791827249927ac9bb67d13d0c18fa343fb08d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x853E 10352 bytes

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