Malicious PDF — malware analysis report

Static analysis result for SHA-256 e106bcea3219973a…

MALICIOUS

PDF

45.2 KB Created: 2020-08-25 02:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c205e08b7ce5bb2999b7a0f00b0fb8f0 SHA-1: 15c23f7496876688c4b72fe43c3c6cf3037e629e SHA-256: e106bcea3219973abbddc332c6977b6366aad954f5eae979cf3edf820d892dfc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the text 'Investigative report sample' and the malicious URL, reinforcing the lure. The primary attack pattern involves tricking the user into clicking a link that leads to malicious infrastructure.

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/pify?keyword=investigative+report+sample
    • http://sonogorib.washnword.com/uploads/1/3/0/8/130874631/8655344.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/lidepapibifinadazegalemo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7938/4731/files/25407480695.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/reorder_pages_adobe_reader.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/49418761895.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/33004973399.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/20717558239.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/zerulidebazef.pdf
    • https://cdn.shopify.com/s/files/1/0434/4614/1093/files/81373864692.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/google_chrome_for_mac_os_x.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/6311871197.pdf
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/atmega328_programming.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/materials_and_the_environment_michael_ashby.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/tuzatexarurukanomijof.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_off0000743f.bin
7ce3ae23f1d75f7c49e3273d1d25a0bcba097cf6bd89cd431edd488b23aa0676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743F 5136 bytes
font_01_sfnt_off000085a4.bin
5133db251873e8bdb134c7f5db5427eeece651e314056a920971062f32adb9ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A4 10300 bytes

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