Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cacdf2b19975f6b…

MALICIOUS

PDF

41.8 KB Created: 2020-09-05 08:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35700f9283a3fa9d85c5bace6ca5c1df SHA-1: d1a7a887809781bdb3998c0922a5da01182c0c78 SHA-256: 7cacdf2b19975f6bbdc8952263fdc06d6d544191e25857402aff0ac3b25b554b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, another critical heuristic indicates a PDF link farm, suggesting an attempt to generate traffic or distribute content through numerous external links. The ML classifier also flagged this PDF with high confidence. The embedded URL 'https://ttraff.com/wix?keyword=letter+s+images+love+photos' is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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/wix?keyword=letter+s+images+love+photos
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/72060748859.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/59624165494.pdf
    • https://cdn.shopify.com/s/files/1/0433/7510/0067/files/16951175171.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/82092980227.pdf
    • https://cdn.shopify.com/s/files/1/0435/1927/9258/files/73188360726.pdf
    • https://static.usrfiles.com/ugd/808d8c_bb939b3055334f4d9b01b45bc778fd74.pdf
    • https://static.usrfiles.com/ugd/18122d_27cea89c4547410ca4bd6cf32f018ee1.pdf
    • https://static.usrfiles.com/ugd/5438e3_469e4f67006e47d09266f842af0f08a2.pdf
    • https://static.usrfiles.com/ugd/0f5b72_420b29ee1c494951b9ad44c94a6d64e9.pdf
    • https://static.usrfiles.com/ugd/33c377_a0e1949d97a54149aa238ae60fd33615.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/lajefenibo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/simcity_great_works_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/97634584270.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6461/files/33326148722.pdf
    • https://static.usrfiles.com/ugd/bc4951_4a8d476b3dfe4442bddfca7707f67af0.pdf
    • https://static.usrfiles.com/ugd/eb4c03_c3aaf055e98d4ccea929835c5e28f63c.pdf
    • https://static.usrfiles.com/ugd/b13fd1_5545228ff64842959fcacc8d0e8b4cbf.pdf
    • https://static.usrfiles.com/ugd/97493d_03b2a40605b34e20aa720930d14441dc.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/8209298

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b37.bin
69bd548fcb9045d8de299c43a3aa544da771821de14cb2516975fc06fdd53087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B37 5232 bytes
font_01_sfnt_off00007ce5.bin
4e5c7d0925b2de4b665d75b9a025ebcfb4de1692b7fa816ecdb85a3f276f5351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE5 11660 bytes

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