Malicious PDF — malware analysis report

Static analysis result for SHA-256 23464347fba20106…

MALICIOUS

PDF

42.9 KB Created: 2020-08-01 21:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 516a30b81cb08d565d49f3d18f59cf79 SHA-1: b817e7bde9f4df5d951794fb9214bdf01ce4bc5e SHA-256: 23464347fba201069f0819dd26dc80f9504e580fec9f3f6f7c3d021d454fd867
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=usb+disk+security, which is likely intended to deliver a malicious payload. The document body, though heavily obfuscated, contains references to 'Usb disk security' and the redirector URL, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware delivery attempt.

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=usb+disk+security
    • http://files.shiningstarpageantwa.com/uploads/1/3/0/7/130739260/0ba49a2998.pdf
    • http://files.sugarlandpremierroofing.com/uploads/1/3/1/6/131606165/faxekigewidufas.pdf
    • http://files.coopfoodtruck.com/uploads/1/3/0/8/130814636/703199.pdf
    • http://files.chazwaterman.com/uploads/1/3/2/6/132696171/xemusegemafijix-vakigigumoredi-sagef.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/the_secret_2006.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/83049703912.pdf
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/1974554829.pdf
    • https://cdn.shopify.com/s/files/1/0431/7030/0065/files/16722788981.pdf
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/96863723953.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/32010575567.pdf
    • https://cdn.shopify.com/s/files/1/0433/8571/6901/files/35968736318.pdf
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/tarosudaxopojiwumuzajoku.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/xexegitusekine.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8723/files/43262253771.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/55024851718.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_off000069f6.bin
14d5fd6c7e7bed2681f28430fcac57f8dea5889a76a48e702e6b35825e7ceb19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 4988 bytes
font_01_sfnt_off00007b0a.bin
ec8deb2e7f77ad029bcd2156145cd90a0a07d78d7a3f6d14a08c9b552ace572b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0A 10704 bytes

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