Malicious PDF — malware analysis report

Static analysis result for SHA-256 9114064fd30998ff…

MALICIOUS

PDF

39.0 KB Created: 2020-08-30 12:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 604ed9242ac7b8e8f9ea278b98700d87 SHA-1: 7ac7fd519a3fe8b8fe7ce05db51629dbaabb80be SHA-256: 9114064fd30998ff06e585a48d57627c3c2a47f68922fba635e58728ded1b132
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to drawing and includes the malicious URL, suggesting a lure to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for the 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.cc/wix?keyword=how+to+draw+what+you+see+review
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/37841735873.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/96082025140.pdf
    • https://cdn.shopify.com/s/files/1/0430/9339/3557/files/99204550622.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/software_architecture_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/3020/6885/files/aimersoft_dvd_ripper_full_crack.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/nufunezesik.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0988/files/warhammer_40k_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/tadimilenoxutitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/54274241775.pdf
    • https://static.usrfiles.com/ugd/9734e7_b9c54492fa054f278c7b5e06121a46a5.pdf
    • https://static.usrfiles.com/ugd/d43733_d849b3c5664a4ce5a09688bac5994a86.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_off00005c0a.bin
7718fd0ed87920ae5e8ba589a4a05eba65379bf20c30625703a6e5d0e7edb282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0A 5096 bytes
font_01_sfnt_off00006d71.bin
dc33effedb5a3a5f886fcfcbdc71978d32bec87b0bfdcb44f27b4052032ff7be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D71 10108 bytes

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