Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada3dd1ebe8dc78f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 14:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b169249012c2e1d155dc10f395d8ec SHA-1: 3a3fa9965ef9fa925a97084ed5789c9a02cd53b6 SHA-256: ada3dd1ebe8dc78f068d65e2fe4b9be1f961e379485aae648e0fbe6a67c50367
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.com/wix?keyword=platform+movie+song+dj', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and a large list of other URLs hosted on Shopify, suggesting a link farm designed to lure users to malicious 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.com/wix?keyword=platform+movie+song+dj
    • https://cdn.shopify.com/s/files/1/0433/6792/3868/files/commandos_strike_force_save_game.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/zizesovurubepamine.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/22112299311.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/dafokuwulalonesupidijo.pdf
    • https://cdn.shopify.com/s/files/1/0463/4653/5073/files/bikug.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/biedermann_und_die_brandstifter_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3057/files/video_call_messenger_for_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/48267460022.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/12318231323.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/17581155156.pdf
    • https://static.usrfiles.com/ugd/353d00_a5776e6026244e86b9992523b17f952a.pdf
    • https://static.usrfiles.com/ugd/b8c837_59695fcc05a440de9294fc6648cc2293.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006315.bin
62a44857f05876f6de4ac023277791f2dde8e89fe40485bf2db12b5d4c40a00f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 5152 bytes
font_01_sfnt_off00007486.bin
4947810df2e8de1aebca2af065bd0fd83f4d0746b6d5fbef606af6a7e149f592		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 10260 bytes
font_02_sfnt_off000097b3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 4324 bytes

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