Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebde4edf676a0cc…

MALICIOUS

PDF

44.3 KB Created: 2020-08-08 21:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be3e5a826987f37554b6f1f14a8fb539 SHA-1: 85ec70716dece175df0c95d3afa26907ff4fa679 SHA-256: 9ebde4edf676a0cc23c7d4808af5704045830cee76227c3e4239e40088b72221
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at ttraff.cc. The document body text and embedded links suggest a lure to download a file, likely to deliver a second-stage payload. The presence of a visual download button further supports this 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.cc/pify?keyword=anti+allergic+drugs+classification+pdf
    • http://files.cakestruck.com/uploads/1/3/0/9/130968988/19575e05eb4e7c.pdf
    • http://files.urbanwordcollective.co.uk/uploads/1/3/2/3/132303219/f95609c8cf37226.pdf
    • http://files.cavysa.org/uploads/1/3/1/4/131406749/a9d01cea88.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1133/files/pst_to_hawaii_time.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/gojadixu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/melutibunew.pdf
    • https://cdn.shopify.com/s/files/1/0429/1647/9132/files/siberunurefitusuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4491/files/busewudofiworu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3656/3866/files/nyc_3l_2015.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/fupafol.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/lafejuviwi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/jezesamuxepifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/36780135764.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/nebidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/xojofajaximuru.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/getatatisumogijedukiteta.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_off00006f4d.bin
4669caa5d2bf92847eac2cef27380bfc33a8f509f33a2188bc0fc0aeae23959f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4D 5312 bytes
font_01_sfnt_off0000816c.bin
89f8e80d7e1ed180aac143e946d9beb5c2b237fc4505d0ccdc41d461cf386bae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x816C 10048 bytes

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