Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a7f3d97d5cfb35…

MALICIOUS

PDF

43.9 KB Created: 2020-09-03 14:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00064bb4b9e037db9b1c381f2b4bc5c4 SHA-1: e9b5345a9686239ad0a94755ad0656d713f24592 SHA-256: c2a7f3d97d5cfb35dbe2fb22c2ff035a3574ca8958aba62cd304e1108f6e71f2
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'ttraff.club', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to '2019 monthly calendar template canada' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.

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.club/wix?keyword=2019+monthly+calendar+template+canada
    • https://cdn.shopify.com/s/files/1/0462/7041/4999/files/zoxofurog.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/small_to_excel_converter_online.pdf
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/evelynn_guide_op._gg.pdf
    • https://cdn.shopify.com/s/files/1/0468/8809/1805/files/ny_giants_injury_report_week_6.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/27182443185.pdf
    • https://cdn.shopify.com/s/files/1/0446/9565/0457/files/61741169590.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/movie_counter_bollywood_movies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0323/9835/files/buscar_mi_telefono_android_con_google.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdf
    • https://static.usrfiles.com/ugd/b8c837_994f6c6b3b334ceca66ad99599072445.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_f2b812e9cf6743a6aae5dc2db0c798d8.pdf
    • https://static.usrfiles.com/ugd/b56239_375bb7cdf62c454f8479ad3a54562782.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_off00006b5f.bin
3b92173c06f74264bb4b45b0c420e9d26179e0fb5719a124c05053becd6dba94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 5624 bytes
font_01_sfnt_off00007e5f.bin
92c93b76bfe9ccad7d813df1307618c3eadeea71506212fe305a18d0285fd752		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5F 11060 bytes

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