Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25def3959d101c5…

MALICIOUS

PDF

48.4 KB Created: 2020-08-26 04:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62ff9544d7135c7e8952de0c768299ea SHA-1: 2c987e98ddb1fd3582678af7ec12ec3c64a2b452 SHA-256: a25def3959d101c52fc1f2a27ba3d9dfc12c5d2b491812da65f4f65cc4343300
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=speed+up+my+mac'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0431/6590/9160/files/bofodapenitodanewov.pdf'. The document body also contains text suggesting a lure to 'speed up my mac', aligning with the redirector's keyword. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also instruct the user to execute commands, further supporting a malicious intent.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=speed+up+my+mac
    • http://files.frederickwysocki.com/uploads/1/3/1/1/131164204/vixomowiganasag-zolike-taxigavovaxepu.pdf
    • http://vubuwo.davidbarg.com/uploads/1/3/1/4/131437987/nuwudutewujo-zuwozolexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/bofodapenitodanewov.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/87108611806.pdf
    • https://cdn.shopify.com/s/files/1/0432/0634/4863/files/boolean_rails_simple_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/90321796114.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/46987091565.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6519/files/xekukisaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8072/9251/files/pibunexetilewafatib.pdf
    • https://cdn.shopify.com/s/files/1/0438/6747/2037/files/4259384459.pdf
    • https://cdn.shopify.com/s/files/1/0438/2552/8989/files/google_docs_to_word_converter.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/fokenofuburabugisagawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1864/8732/files/zebemovoxigilobej.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_off00006aa2.bin
58814b88ea135cabe449d1c5e55f8792dfa7107ff16fa260b2280508c5ab5ae3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 5120 bytes
font_01_sfnt_off00007c01.bin
cff6615766ae15200820ed81b24ce5320ad0c54c0efe62b14c3c6fb9c108784c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C01 10516 bytes
font_02_sfnt_off0000a029.bin
df8916dc0488248139c8b7f8575cdad52201066875df9eb3f38f8be7ce625b0f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA029 16076 bytes