Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c16e4f2df442cfb…

MALICIOUS

PDF

38.8 KB Created: 2020-08-17 05:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b265288e961f3754b9332e59ae026fe9 SHA-1: 8012e6e39db965b52e75530f48d7dd141f2cc1b0 SHA-256: 9c16e4f2df442cfbca4417bd0393c78a24473a643bd1ab7f4c86ba3c32418097
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adviser+asset+platform+ratings, which likely serves as a gateway to further malicious content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

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/pify?keyword=adviser+asset+platform+ratings
    • http://files.janetsikiricafiberarts.com/uploads/1/3/1/1/131163613/xesuzalu_wujabijix_labizalarapebe_tisoxenofinu.pdf
    • http://files.lichunsu.com/uploads/1/3/2/6/132683137/kiruvev.pdf
    • http://desaxirif.tgja.org/uploads/1/3/0/9/130969149/8130817.pdf
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/sowugimixadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/20258657298.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/architecture_portfolio_design_psd_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/9080/2856/files/ninogupavinuwepumulowuwuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2374/files/venasanexafebineb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/78596951071.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/tujotedenudu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/quimica_descriptiva.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/47091009418.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/608930129.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/kuzeseribofagolibino.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_off00005a89.bin
a5a1e74b16f64bf8a329f5b73a3ab1552195c96c9b614c97bd205effe1f20a19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A89 5412 bytes
font_01_sfnt_off00006ce1.bin
0f16f7a86a74a28a5599be79bb4cfe39bd9d63d0e715285d42eb2953599185af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE1 9844 bytes

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