Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0321e5d7d6d5ae9…

MALICIOUS

PDF

41.9 KB Created: 2020-08-07 19:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30594cafb80edb7a0d9d7ce0e6c3993b SHA-1: aed9e103b456fbaf5fa699d5125983d728186a9f SHA-256: c0321e5d7d6d5ae91f80e23a1b0395d17ba7d21319306d171eee9b414b88ca9f
130 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to shopify.com domains, but one critical link redirects to a known malicious redirector at 'ttraff.ru'. The document body text, though partially corrupted, includes the phrase 'basic life support pdf red cross' and the malicious URL, suggesting a lure to disguise the malicious redirection. The presence of a visual download button further supports a malicious workflow.

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.ru/pify?keyword=basic+life+support+pdf+red+cross
    • http://files.theccoproject.org/uploads/1/3/1/8/131871405/8890724.pdf
    • http://files.nurtureandnature.org/uploads/1/3/0/8/130874569/pinikop_bakiloxufudom_xumuk_lizitewupu.pdf
    • http://files.peterschipper.com/uploads/1/3/2/6/132682892/7948539.pdf
    • http://files.empressboatclub.org/uploads/1/3/0/7/130739747/322848.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/gazelaxoneseluxodi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/29004957411.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/90113573573.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/zemidoxivoxega.pdf
    • https://cdn.shopify.com/s/files/1/0440/8472/3864/files/rosetta_stone_french_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/38664481585.pdf
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/lemedivarutoto.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/62629849946.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/class_a_b_ab_c_amplifier.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/investor_presentation_example.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_off00006477.bin
066678b7ad22d15251553035db9629dc9a4ffd5d3e1b350511fbfb004c83fae5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 5200 bytes
font_01_sfnt_off00007639.bin
02e01a4e16dcc5a88bbd54750d10109e4f4080ff056c0e940f41b834ec3bff4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7639 10676 bytes