Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d4b2c934d7bf46…

MALICIOUS

PDF

39.8 KB Created: 2020-08-12 12:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 792fa161045d6690e0a0e06b296ba384 SHA-1: 62135e19976966784eb38994de6d216e47e05f9b SHA-256: 79d4b2c934d7bf464df2e4bdb7ffe86b095361fbaee716979f8820c3b75292af
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=tutorialspoint%20dbms%20pdf'. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to external content. The presence of numerous links, including a malicious redirector, indicates an attempt to lead the user to a harmful destination.

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/wb?keyword=tutorialspoint%20dbms%20pdf
    • http://files.thinkfoodla.com/uploads/1/3/1/8/131856331/pumozoliki.pdf
    • http://files.rallytheatrecompany.com/uploads/1/3/2/6/132695553/3170976.pdf
    • http://files.gunmanualsonline.com/uploads/1/3/0/7/130740193/buvisipi_momitadurudibat_kedorov.pdf
    • http://lozariram.curtisbowman.com/uploads/1/3/0/9/130969744/2495299.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/istqb_glossary_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3088/9126/files/wipurokix.pdf
    • https://cdn.shopify.com/s/files/1/0436/0319/8115/files/22337571677.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/gubijekezodedunepububupas.pdf
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/pipebanoduvik.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/63391050970.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/mexif.pdf
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/meposinularepadori.pdf
    • https://cdn.shopify.com/s/files/1/0438/5390/6080/files/fazifamonisogapagowo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/behringer_x_touch_manual.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_off00006071.bin
91bd1fd58ba69812fc5262db9d213255f4606bae3bd5b43312c1509aaed99cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 5276 bytes
font_01_sfnt_off00007241.bin
4113863cfc5fe48ac1d68bb5e79092062f4a1f177ae9f76671c9e35b65fc510c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 9524 bytes

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