Malicious PDF — malware analysis report

Static analysis result for SHA-256 20d1702165167880…

MALICIOUS

PDF

43.1 KB Created: 2020-08-12 09:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b12fe7c349b16d265d42b06e18eea3d SHA-1: bdd9b8de4641a2a18a0f448987f2f39193dbb3d4 SHA-256: 20d17021651678805daa686af8f4596e543e0efd17c6240e4ec423e8df684de0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body also contains text that instructs the user to copy and paste content into a shell, indicating a social engineering lure to execute commands. The primary malicious URL is https://ttraff.ru/pify?keyword=boston+bowel+preparation+scale+pdf, which is likely used to deliver a secondary payload or redirect to a phishing site.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=boston+bowel+preparation+scale+pdf
    • http://files.virginiashowmasterscircuit.com/uploads/1/3/0/7/130775970/2702494.pdf
    • http://dirok.nbachurchofbryant.com/uploads/1/3/2/8/132814930/7287377.pdf
    • http://files.military2millionaires.com/uploads/1/3/1/8/131872273/gitufajerifinu.pdf
    • http://sixesofa.emeraldtrailbassethounds.com/uploads/1/3/0/8/130874207/zinerisesedijaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5768/3349/files/pidakokulokalosewuju.pdf
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/tujapek.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/zivajujodaratupo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3061/files/categorical_syllogism_examples.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/satalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/619389578.pdf
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/body_temperature_regulation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdf
    • https://cdn.shopify.com/s/files/1/0433/9872/5793/files/vimukizixosuxaniw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/el_nacionalismo_mexicano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/36553477823.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/toved.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_off00006841.bin
32dffff54c807ef2d10611f189650eeec900db458c8cd056de5f5ca779096d63
pdf-font-stream PDF embedded font (sfnt) at offset 0x6841 5432 bytes
font_01_sfnt_off00007acd.bin
253828e32fb350a7a62f68a9915b6cae3e820d8bdf19aa88d6a961f87f907092
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACD 10972 bytes