Malicious PDF — malware analysis report

Static analysis result for SHA-256 23dd8bf5ac6a92de…

MALICIOUS

PDF

138.5 KB Created: 2020-08-19 01:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63aa26188e76f20a7fc3d416f06f1cb4 SHA-1: 7519788639824b9fcaccbb10d34568b142dd0be2 SHA-256: 23dd8bf5ac6a92deae16ba91a86a08559edaf50c88010237b9a7a470f14e76c8
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text that appears to be a lure related to a "Genestealer cult codex pdf 2019". The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

Heuristics 3

  • 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.
  • 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=genestealer+cult+codex+pdf+2019
    • http://salukurov.my-early-morning-thoughts.com/uploads/1/3/1/3/131398368/1463938.pdf
    • http://files.charlesablemedicalphysics.com/uploads/1/3/1/4/131413718/soduwusufugowet.pdf
    • http://files.christinevanwalraven.com/uploads/1/3/0/7/130776484/dalom.pdf
    • http://files.pack23scouts.com/uploads/1/3/1/3/131397973/ratowibur.pdf
    • http://files.ag-cat.com/uploads/1/3/0/8/130814078/4145932.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/98948256673.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/batopojasefobak.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/36182708742.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/80812350471.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8077/files/37737123458.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/activities_of_daily_living_roper_logan_and_tierney.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vufofabiziterefabul.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/statistical_quality_control_book_by_mahajan_free_download.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_off0001de72.bin
fa2573a71671c84882ce4cb5bd43b53b1e740f35196fa2d1411fd7a0284476ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE72 5728 bytes
font_01_sfnt_off0001f20f.bin
2ea08eb3edc6dac686c28eee3e39691781dd0b872d7da1a534386e6d7d52fca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F20F 13460 bytes

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