Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba49adc07222eeb…

MALICIOUS

PDF

39.5 KB Created: 2020-08-17 00:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6427d7876814a69de2f90358fb2e9dc3 SHA-1: f7d833c5b75fa700bae31ed36107f17283a2bced SHA-256: 9ba49adc07222eeb98c6b2091a5e48a0fa56db9fa94c7732422b617847529f7a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at `ttraff.cc`. The document body, though heavily obfuscated, contains the string 'pallet town theme sheet music' and the malicious redirector URL, suggesting a lure to disguise the malicious intent. The presence of numerous Shopify-hosted PDF links indicates a link farm SEO tactic, likely to obscure the primary malicious destination.

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.cc/pify?keyword=pallet+town+theme+sheet+music
    • http://lopobu.jgerenstein.com/uploads/1/3/2/6/132681464/dubegexuxetepuza.pdf
    • http://files.transcultural-care.com/uploads/1/3/2/7/132740275/222565.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/20075966738.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/53965687044.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/75250349476.pdf
    • https://cdn.shopify.com/s/files/1/0452/2446/0445/files/jawabifexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/22298795008.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwunojipodaga.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/mowejomilizatedizijumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2179/4460/files/20229520004.pdf
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/slack_delete_channel.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_off00005e85.bin
069b9512febf2d8743133030712e66b8834058cbbe23ba5c5c343d740f4a3e58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 5036 bytes
font_01_sfnt_off00006f8d.bin
659acc2c20e0e62b3477ce1f541a54c70fdf6afbe2600a514d1b2ea750808eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8D 9908 bytes

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