Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e3dd8da84dc922…

MALICIOUS

PDF

48.5 KB Created: 2020-09-01 01:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dc88d9ea9acf439e26021390803691c SHA-1: bc778762077d6b0c9385f45b653b8094f7a17a7e SHA-256: d3e3dd8da84dc922d275f207af5a8a1154f11ff7d0f0984c9efe4bb1f722add5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm of external PDF documents. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=hello+neighbor+guide+alpha+4'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended destination. The presence of numerous links to other PDFs indicates a strategy to obscure the final malicious destination or to distribute further content.

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=hello+neighbor+guide+alpha+4
    • https://static.usrfiles.com/ugd/221f3a_952443db8caf48e0a8e6fc5394dd76c1.pdf
    • https://static.usrfiles.com/ugd/5e8de6_68f675bb841b4606a849f1897705a6cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf551a7e46aa44c3a958e961fa977820.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6140/files/37476110257.pdf
    • https://static.usrfiles.com/ugd/eed56f_cc02cb6ffe8c461fae7cf9699dc608b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_22369135569249eba7d94d423d4ad4c9.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_cdfffb09ea8d49fc9a722d3e35d1db4f.pdf
    • https://static.usrfiles.com/ugd/96768c_41606da9d25546a09cc580e98d124997.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/23669335588.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/chemistry_lab_manual_class_9_cbse.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_off00007b63.bin
8ec63169855d363c7e21142de45f199671be3905aa806881c7874da4513c68f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 5232 bytes
font_01_sfnt_off00008d24.bin
9d145ccf49238069a4bebcc855b08f4420cdc1d178aeab2b60ca029816c4eba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 12700 bytes

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