Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8383cc460e241a3…

MALICIOUS

PDF

41.6 KB Created: 2020-08-10 01:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f17f4ee1fe1a85e03a702d05a39c0d5 SHA-1: 3fb578fd1d7f51dec685d5d874570b38ced6d8ae SHA-256: c8383cc460e241a3d355a35eb3f60f6d2da5b374a4e34beefb541fedabac5fd4
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to PDFs hosted on Shopify. The primary malicious URL, https://ttraff.com/pify?keyword=toksisitas+amfetamin+pdf, is identified as a malicious redirector. The document body itself is heavily obfuscated but contains the same URL, suggesting it's the intended lure. No scripts were extracted, and the PDF structure itself does not indicate exploitation, but rather redirection to malicious 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.com/pify?keyword=toksisitas+amfetamin+pdf
    • http://files.classicshedsandgazebos.com/uploads/1/3/0/8/130874046/306039.pdf
    • http://files.wpbluebirdfestival.com/uploads/1/3/2/6/132695354/wosisogixopo.pdf
    • http://files.sestainedglass.com/uploads/1/3/1/1/131163740/nizukofanijaz.pdf
    • http://files.imitservices.co.uk/uploads/1/3/0/7/130776166/1775701.pdf
    • http://files.avianexotichospital.com/uploads/1/3/1/3/131379382/murutaduveb_nebininop_limaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/9919/2486/files/68100415366.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/92364364905.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/dadaketenizevisikas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/5310166302.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/black_boy_wright.pdf
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/8813332066.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/32349070470.pdf
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/49597266819.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/circulatory_system_of_amphioxus.pdf
    • https://cdn.shopify.com/s/files/1/0435/9572/7007/files/zuboxoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/bessel_equation_solution.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/fable_2_siver_keys.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_off00006620.bin
8981b4ce73b50074a68285df186a213b6b15195c5baca4b64aa4982da7d7aa41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 5072 bytes
font_01_sfnt_off00007757.bin
f842a8218b9ebb1d0580ebbbaa36e5743ebb93364320fa1eb6de1b66e24fdd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7757 9908 bytes

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