Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fae060a521b1a3…

MALICIOUS

PDF

50.7 KB Created: 2020-08-04 23:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2db3264f046d4bd5fcf6bbf66166e09 SHA-1: c9d5d29b2565745e6abe5b5182300894d94232ce SHA-256: d4fae060a521b1a3db0d25fab9e52e9b8a6291eb04f189461489619017c98e11
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=storyboard+template+pdf+print', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=storyboard+template+pdf+print
    • http://files.northpalmbeachlife.com/uploads/1/3/1/4/131437676/b1383b31d9696fa.pdf
    • http://letivevop.gnomedaws.com/uploads/1/3/2/6/132681504/kigebozika.pdf
    • http://files.visitsmithcountyms.org/uploads/1/3/2/6/132682883/c01545f011.pdf
    • http://lesagof.southfork-studios.com/uploads/1/3/1/4/131452836/2848778.pdf
    • https://cdn.shopify.com/s/files/1/0432/9570/3204/files/99684581283.pdf
    • https://cdn.shopify.com/s/files/1/0432/7931/9196/files/vinudafukarujibabokesunap.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/25220413382.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/reweroxebumimuselex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/tazurefanipipananekafap.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/nexur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/birumazopuwijin.pdf
    • https://cdn.shopify.com/s/files/1/0440/8249/5640/files/39535093670.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/9260119906.pdf
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/34900334340.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2014/files/bamulanilenabubagusagu.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_off000084e3.bin
e0d8bbda4d8b49dd8231cd7a72a4d9cefd3d362eb48afa091d404c088c184224
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E3 5352 bytes
font_01_sfnt_off00009709.bin
2ab1682272d49b1658c0b9114664c183c75a8fba3fd233f6dd2f7d166e2d319f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 12292 bytes