Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3bbb53d8c9e816…

MALICIOUS

PDF

60.1 KB Created: 2020-08-29 18:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e8d8488e1f08b0dc03c82e8933e0124 SHA-1: 1a2ac05d561f95d3d6b6df658bcc5664751e7048 SHA-256: bd3bbb53d8c9e816d1869607b465fd1260c2294ec4c3a8666c0ddd325e709a72
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain the title 'Practical scrap metal small arms vol 3' and the malicious URL, suggesting a lure to a malicious site. The presence of a link farm further supports a malicious intent to drive traffic to potentially harmful 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/wix?keyword=practical+scrap+metal+small+arms+vol+3
    • https://static.usrfiles.com/ugd/b8c837_f52ec25b35d0407d8f27524e9b91a89d.pdf
    • https://static.usrfiles.com/ugd/3aca14_4d1092ad3244493f8540f64db91d69e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_77221a66c268461892ee2ec5bfdc527b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d5abccfc9204656b8b2e684fdb2f274.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/25876632532.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/xuwolawuro.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/42689816120.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/99371824242.pdf
    • https://static.usrfiles.com/ugd/0c268c_d8565b56362449b5befc1d0408d61328.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f87965d5f114d34b7a3a0c71c8a95c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_13069e5ea59e426e91a94cabcaab5760.pdf
    • https://cdn.shopify.com/s/files/1/0436/1843/5229/files/recetas_de_comida_para_diabeticos.pdf
    • https://cdn.shopify.com/s/files/1/0435/9772/5864/files/duxubezavud.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/7345003537.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_off00009db9.bin
795ea23d6bdfebfebbada9813f2bb5a76da8f039115b212ce91753e243468559		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB9 5304 bytes
font_01_sfnt_off0000afab.bin
24d076bef79e78382c2149cf5009b8d38ac8a9ed26ab2685c822edaa3b36fdec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAB 16792 bytes

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