Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc0d244900716b7…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 01:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e526a1fdc6819a202bc464943810b42 SHA-1: f3f62aab42d5d5c3f3172f7c36350bfa07eb86af SHA-256: ffc0d244900716b78f757104f20ea3c010c9b0054638a478a9dff9d8c337ba08
120 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, specifically pointing to 'https://ttraff.cc/pify?keyword=birthday+cake+pics+free'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector URL is sufficient evidence for this assessment.

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=birthday+cake+pics+free
    • http://files.benes.edu/uploads/1/3/1/6/131636719/166fe13eb916.pdf
    • http://files.livingwatersapostolic.com/uploads/1/3/1/4/131482931/255b43e3bb18.pdf
    • http://remosoz.littlebitfishy.com/uploads/1/3/0/7/130739561/nokuwodarinab.pdf
    • http://wilaz.getbodyfood.com/uploads/1/3/1/3/131383483/lanujo-ribefud.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/terminal_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/sagoliwudazugupegilusobov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/95116102649.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rexoguwovaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/59679253164.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/jewobotifikanidepodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38967404473.pdf
    • https://cdn.shopify.com/s/files/1/0449/9108/6750/files/dotoresega.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/58763107369.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_off0000602a.bin
0f72084add4f2752c0acb5cd4a3950b4816cadb7bb998406df8873ec3d202a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5428 bytes
font_01_sfnt_off000072a1.bin
ec7e4062c38998000c0c4bae743f0cc56a4265f1147d006c88b773b83e01c45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 10188 bytes

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