Malicious PDF — malware analysis report

Static analysis result for SHA-256 95391488a586158d…

MALICIOUS

PDF

40.2 KB Created: 2020-08-01 06:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99deb5267364d6f5ba2ddad4b1ea33de SHA-1: 829ab444156f86bcc2317adacbd615e07bfbc8a1 SHA-256: 95391488a586158df47471d7881a5354b9b2e1933efc1e84678d1443e09207cf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains references to academic material and the malicious URL, suggesting a lure to external content. The presence of numerous PDF links, including those hosted on cdn.shopify.com and other file-sharing domains, indicates a link farm strategy to potentially distribute malware or phish for credentials.

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=sparknotes+sir+gawain+and+the+green+knight
    • http://files.hugsforhounds2.ca/uploads/1/3/1/6/131636807/loguki_xemikiwugo_jojizog_nidejobugiwo.pdf
    • http://files.mrhibbert.com/uploads/1/3/0/8/130874679/05489c.pdf
    • http://files.handyplan.net/uploads/1/3/2/6/132695732/xebefiwaguti_gusadapeja_jatobozilezu_babofefodudov.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/hollywood_forever_cemetery_sings_chords.pdf
    • https://cdn.shopify.com/s/files/1/0435/5692/9687/files/dubexufojebamenemugu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/3936941899.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/83422119991.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/88986539123.pdf
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/vuneno.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/zidud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.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_off00005fe7.bin
54f4fd5c0a5db1756a22e4b457ff306b8918c4c6a387518290c13d45ddf6b890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE7 5448 bytes
font_01_sfnt_off00007279.bin
b67cc7d0bc8ddf3e959a3fd26aa3bac1d2fc94b0e952b6b3837030676f1b4070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7279 9748 bytes

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