Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abf36a099a292a3…

MALICIOUS

PDF

43.4 KB Created: 2020-08-31 16:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a1adce9fbdcdad85f56cad8b33cc2b SHA-1: bd3eab45ad500126885cfcc8e4cca6ab0974475a SHA-256: 3abf36a099a292a3076f8e02d5da4c20052633b62e96412a0c6781765668c2e9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many of which are hosted on Shopify. The primary malicious URL is the most critical IOC. No scripts were extracted, limiting the analysis of further execution chains.

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=braveheart+original+soundtrack
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/introduction_to_blockchain_programming.pdf
    • https://cdn.shopify.com/s/files/1/0433/3846/5435/files/1050_vs_970.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/20054546017.pdf
    • https://cdn.shopify.com/s/files/1/0464/6289/4248/files/there_will_come_soft_rains_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/mipibulavozotexaza.pdf
    • https://cdn.shopify.com/s/files/1/0462/2758/7223/files/foods_inns_ltd_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/4682/0245/files/wikexivikov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/33291650573.pdf
    • https://cdn.shopify.com/s/files/1/0435/3851/4071/files/calculus_finney_demana_waits_kennedy.pdf
    • https://cdn.shopify.com/s/files/1/0429/0710/7495/files/delav.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/bedopalavovikujoxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/27162526463.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/morovugulejozotaxive.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbc3e5146f5d47b9bd1c8682daaed1fc.pdf
    • https://static.usrfiles.com/ugd/8e1900_5de64c516d7142bfa71eb35fc3fb3e16.pdf
    • https://static.usrfiles.com/ugd/89c6ad_d7d90e1416f44e8bbe25eb646df20610.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_off00006b05.bin
4c9a4fcb282216c039e9ec20bf39e60dbb2e26d8b22c5344995905b4e27690cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B05 5376 bytes
font_01_sfnt_off00007d50.bin
4bea085718080ce3debff301cd9fc14a48412efd584e8a33b22e78ad9e13b822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D50 10352 bytes

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