Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f64860c5a806ce…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 18:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a544dc326dff49e6df43f171018f84 SHA-1: 89c5486f994f214cb8c102ee1600dd9c45a5a73f SHA-256: f8f64860c5a806ce366845061dabe31f4091da1e8a6f9f3542204f1172104938
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with game-related keywords. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on CDNs, suggesting a link farm or redirection strategy. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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/wix?keyword=faithful+friend+witcher+3
    • https://static.usrfiles.com/ugd/b8c837_1704dd35a41148099ccebb10aa52a13f.pdf
    • https://static.usrfiles.com/ugd/7598fa_c6357da0cb794b11af0c992838bee990.pdf
    • https://static.usrfiles.com/ugd/6f7357_79534ca5524c4c659623c8a1faef119e.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/fewifivepodezaduvun.pdf
    • https://cdn.shopify.com/s/files/1/0434/6013/3030/files/zixonanesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4211/0625/files/tikupipuvowadivuzuzojut.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/34788739428.pdf
    • https://cdn.shopify.com/s/files/1/0431/9464/6688/files/50060490536.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/modebidox.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/41264742185.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_off00007c5b.bin
ef065ef992e16b368f96a0632c9de6f11439ca347d733643bf78e2a1e7236c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 5140 bytes
font_01_sfnt_off00008de4.bin
120ea3384353c237a58b5aa8b42cc45cde80d19f3d91e2eed4ef831c0a39911b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE4 10452 bytes

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