Malicious PDF — malware analysis report

Static analysis result for SHA-256 99bf562902ebe760…

MALICIOUS

PDF

131.3 KB Created: 2020-08-20 08:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c4988383e5bfa265c4604b1c0c7fd0b SHA-1: 47c9b3baacc6e452c541173da184cfc8b5bdf689 SHA-256: 99bf562902ebe760c008ccc42358825e75588e62bcf6740ea639d19eabb3c908
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt. The document body suggests a lure to install a browser extension or update to view content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=alter+ego+plus+a2+free, which is likely used to redirect the user to a malicious 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=alter+ego+plus+a2+free
    • http://files.skyleblanc.com/uploads/1/3/1/6/131637034/sabosutukitikusuwiw.pdf
    • http://files.liviajatoba.com/uploads/1/3/0/7/130739369/mitetavuluru.pdf
    • https://cdn.shopify.com/s/files/1/0462/6943/1959/files/extracting_dna_from_banana_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/65420709081.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/pm_awas_yojana_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdf
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/45617084357.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/dawidadazovunavesa.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/dunev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/sekevupu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/82442438787.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019d89.bin
3bd74446845269e22831e0970d8ff80da3ad3b624a94e81ef87ea91865a94530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19D89 5192 bytes
font_01_sfnt_off0001af47.bin
9712bebbafe0158bf5c2542130fdc5eb26e7b88530d1030aa5d077791cb95af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF47 19720 bytes
font_02_sfnt_off0001ea41.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA41 16204 bytes

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