Malicious PDF — malware analysis report

Static analysis result for SHA-256 573efe5b7e6c50e8…

MALICIOUS

PDF

49.3 KB Created: 2020-07-30 05:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7915b74d113683d0218cb05c7ed0e64a SHA-1: 3b205cb37f43d2d07c4982d29d961d880b43b09f SHA-256: 573efe5b7e6c50e88f41ecdd82116f38a61b8f46fd5d9cb602bae40d86534aee
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'theory of social media addiction pdf'. The primary attack vector is likely social engineering via a malicious link embedded within the PDF.

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=theory+of+social+media+addiction+pdf
    • http://files.sadhanayama.com/uploads/1/3/0/7/130776016/xuruwanuli-sepajujowij-mufeg-gebubizunesipel.pdf
    • http://files.ettinstitute.com/uploads/1/3/0/7/130739063/13129fd2ad2a.pdf
    • http://files.bradschmidtdesigns.com/uploads/1/3/1/8/131857041/zevamimode.pdf
    • http://files.barnontheweb.com/uploads/1/3/0/7/130775151/senidojiwovodemo.pdf
    • http://files.sadhanayama.com/
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/56969403934.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/moxizefumavemupex.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/67002928433.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/lakapalatuxawivurosino.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3948/files/lutajegiwoloxijip.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/31046482753.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/14431074869.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/nexit.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9267/files/86284077034.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/rijivoxugovilex.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_off000084d3.bin
93d3282356f21c0ac07340f70d7c9eaa5c6fdddd820a35b8b189181e5b907861		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D3 5232 bytes
font_01_sfnt_off00009680.bin
48a11fe4552c445d2278cc9b0620e49152ed2ba77c895905947c15187b1ec545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9680 9920 bytes

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