Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5eb47ad9cdb5a8a…

MALICIOUS

PDF

39.7 KB Created: 2020-09-02 17:50:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a25bc2c90f44314c8d99eaec26d1ffee SHA-1: fd5df829bde3089e941d0a67fa376c1de3ec3c30 SHA-256: c5eb47ad9cdb5a8a1e322d70974f8763de810e3307ee1ced587bde63edf1d9c4
150 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a significant number of embedded links. One of these links, https://ttraff.com/wix?keyword=fluvial+processes+in+geomorphology+pdf, points to known malicious redirector infrastructure. The document body appears to be largely obfuscated or corrupted, but the presence of numerous links suggests a lure to external malicious content, likely for phishing or malware delivery.

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.com/wix?keyword=fluvial+processes+in+geomorphology+pdf
    • https://static.usrfiles.com/ugd/b98abb_47b049c12d2343dcb451f8a998f6fd19.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c60dc9215f24256a5f9b967047a8e19.pdf
    • https://static.usrfiles.com/ugd/48d9a1_7f074fa531154ee3b3b0cc2f1a7205f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2298079133140999817f0eb7840f75a.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/jumugakorofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2171/3060/files/charminar_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/50997825458.pdf
    • https://cdn.shopify.com/s/files/1/0438/9437/4555/files/50148950477.pdf
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/android_republic_toram.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/lategifamimewolovafifi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/downgrade_to_unsigned_ios_without_shsh_blobs.pdf
    • https://cdn.shopify.com/s/files/1/0432/3187/1139/files/zevefalerijoguzetot.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_off00005d6f.bin
f3c9270794b196c184b930c165fb8a8f7965e5eb0cb9767c532ea34ab029aebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 5684 bytes
font_01_sfnt_off000070a6.bin
78008d7142ab23b92066b469cc9d5b66f8bdb4dd447e61b57e841c130458146d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A6 9812 bytes

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