Malicious PDF — malware analysis report

Static analysis result for SHA-256 232fc6fe26cc89ee…

MALICIOUS

PDF

33.3 KB Created: 2020-08-30 11:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14d63d33decd625ec9de663d48beb87 SHA-1: 062fd00a5b45e782db4ebc9e3d934ddc5fedccec SHA-256: 232fc6fe26cc89ee396bca43bfbe2779739b4c4b1330592b65ee2b4c1c1026d4
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.cc, which is known to host redirectors. While the document body contains garbled text, the presence of the URL and the heuristic firings strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=disney+princess+carriage+bed+instruc
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/home_care_tax_credit_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/8576/5535/files/lotofopuwolibaxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/88615358075.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/narasimha_kavacham_lyrics_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/juzovawigimitew.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/how_to_make_sea_lanterns_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/african_fashion_history.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://static.usrfiles.com/ugd/b8c837_a312723ff3914a8086a5fc758ffccd1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2b0b735e20c4f308f2f9922363ccce6.pdf
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/msrtc_advertisement.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/65420709081.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_off000045ee.bin
75109b8fca1671451f0ec24aa186818fcea4c5a1786b61e9d00b6d19c74d7ec1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EE 5448 bytes
font_01_sfnt_off0000587a.bin
f9ac2ffd665bcfb37fc20758d4c6bafc520bf662a89b9e23fd498fa43598cbef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587A 9404 bytes

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