Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfbc12a90d578a5…

MALICIOUS

PDF

47.0 KB Created: 2020-08-26 15:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 614b6c0728831df364309e4e34034fb4 SHA-1: 6047e18816f9baef959b825831d5ea952db83a3c SHA-256: 9cfbc12a90d578a50e13d69920abaad71bcb13442a875f166574d53431d27f08
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to a critical heuristic firing for a link to known malicious redirector infrastructure. Additionally, it contains a large number of external PDF links, a technique often used for SEO manipulation or to host further malicious content. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword parameter. The document body contains garbled text but also includes the same malicious URL and several Shopify-hosted PDF links.

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=plano+transversal+del+cuerpo
    • http://files.leroyvfw.com/uploads/1/3/1/3/131380258/a82557c5451a294.pdf
    • http://files.nathonkelley.com/uploads/1/3/1/3/131380754/mukugavaza.pdf
    • http://files.liberationgifts.com/uploads/1/3/0/7/130739776/cac93a275.pdf
    • http://files.birthbabiesbeyond.com/uploads/1/3/2/6/132682230/nelefuxobir.pdf
    • http://vovesil.creativerehablab.com/uploads/1/3/1/3/131380594/gugujidajex.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/zupexotavidowudasanu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/wikidin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/samabiju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/xorewemimaxafeledevu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0437/2738/8826/files/uniform_format_of_accounts_for_central_autonomous_bodies.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/vawajaxiwefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/clozapine_monitoring_guidelines_victoria.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/tiwapijejet.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/thermodynamics_cengel_8th_edition.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_off00006ae5.bin
25d69fbb0df19e04681966840d8b4ef3cf7c67aee4dd9540736a939731aacb07
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE5 4964 bytes
font_01_sfnt_off00007bd1.bin
ddd7c0d9870ba0bfb6fb3c76d0e9760640f058174e1e4e06a9f9bd7b98ad8eee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD1 10808 bytes
font_02_sfnt_off00009f25.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F25 4324 bytes