Malicious PDF — malware analysis report

Static analysis result for SHA-256 304508bd3291b7cd…

MALICIOUS

PDF

42.1 KB Created: 2020-08-31 10:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 781c4b8b098eab7d1167da8461e83388 SHA-1: 11ec548ac37cdbb7b9cf385214f80f755e92878b SHA-256: 304508bd3291b7cd7fe4decd9678926159d9401f6a917a59cd6d4ba5e720ee3c
128 Risk Score

Malware Insights

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

The PDF contains a call-to-action phrase and embeds a link to a known malicious redirector. This suggests the document is designed to trick users into clicking the link, likely to download malware or visit a phishing site. The PDF also contains a large number of external links, indicating a link farm strategy.

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/wix?keyword=employee+training+tracker+template+e
    • https://cdn.shopify.com/s/files/1/0432/6273/8592/files/larry_k._baxter_capacitive_sensors_design_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0434/2765/9932/files/kujafobikopewito.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/how_to_download_a_font_to_photoshop.pdf
    • https://static.usrfiles.com/ugd/b8c837_afbed24747424c868d89aeb25c9ee842.pdf
    • https://static.usrfiles.com/ugd/b914b5_afb082d18d1e4da98da5dde65a347434.pdf
    • https://static.usrfiles.com/ugd/b8c837_76bac145d3f942f5895190352fac18c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_935a8343ec544018a841e5ed105e3f9f.pdf
    • https://static.usrfiles.com/ugd/5ad03d_a79f9a85207c4f2189a48163d8d8db8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_7201f6fead11433995dd04fb9a5e2270.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/59186870851.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/mass_effect_2_zaeed_dlc_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/century_laminates.pdf
    • https://cdn.shopify.com/s/files/1/0434/3113/3340/files/43528423706.pdf
    • https://cdn.shopify.com/s/files/1/0438/3201/7058/files/15554549312.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_off000066ec.bin
22c1f141b2823c3c2f566b340b88b7e0643d10e2b76a4d234c1682df123f3460		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EC 5196 bytes
font_01_sfnt_off00007893.bin
1bc549970b113df33cb5e36039b174741887df267a46cb22f5aebbb03bff8229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 10256 bytes

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