Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33f95c1c8169a35…

MALICIOUS

PDF

39.9 KB Created: 2020-08-23 04:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a40aa08ab0543e71f8ba453a1c1fe3e SHA-1: 1705c7f3f8e90bda7918867083b4eb3c491ae78c SHA-256: a33f95c1c8169a3508f7dbf52e9c404c430dda45633313a6e27ef6b62edd7c79
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, pointing to 'https://ttraff.cc/pify?keyword=nike+platform+sneakers+mens'. This indicates an attempt to lure users to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The presence of multiple unknown URLs further supports the malicious nature of the document.

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=nike+platform+sneakers+mens
    • http://files.writings.emanatepresence.com/uploads/1/3/0/7/130776490/zirejenozuzakugisor.pdf
    • http://files.susanhilllong.com/uploads/1/3/2/6/132681767/pugowegetuxakegusef.pdf
    • https://cdn.shopify.com/s/files/1/0462/6622/0695/files/operasi_bilangan_bulat.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6112/files/accounting_and_financial_management_notes.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/anaphylaxis_pathophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8469/files/xopidaxiwewonisik.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/49356318201.pdf
    • https://cdn.shopify.com/s/files/1/0433/4010/3845/files/cpr_guidelines_aha_2015.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/86139542198.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_off00005f24.bin
e4d12f8732271419036c7b72b9ea09fc9a98163779f89338d4790fb622c25c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F24 5080 bytes
font_01_sfnt_off00007053.bin
c4a011f0b40ba269c8c95eb807f40ac2fa5601bba2d47e8b1e89643b96f5dbfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7053 10220 bytes

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