Malicious PDF — malware analysis report

Static analysis result for SHA-256 791b813074dbd562…

MALICIOUS

PDF

43.4 KB Created: 2020-08-30 19:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3bf82c15a617b17aed367a98375107b SHA-1: f6adfd827d2a1404aeece7d2e77c56771877f22d SHA-256: 791b813074dbd5629050107ffc9de8a03c9160fde81e6df28ecaed11fd8cff4c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to deliver a second-stage payload. The document also contains instructions to disable security software and execute commands, consistent with social engineering attacks designed to bypass security measures. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute content widely.

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=roblox+stuck+on+configuring
    • https://static.usrfiles.com/ugd/b8c837_5ee0e4978d2f4d1aa929704d3dc48fbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_eef65faab57c451da30947b4172d077f.pdf
    • https://static.usrfiles.com/ugd/b8c837_84f3a972375442739521796887dddbbd.pdf
    • https://static.usrfiles.com/ugd/a91264_542ad411429f45dcb760136b2c722307.pdf
    • https://static.usrfiles.com/ugd/078c79_b2e2fc9e0369427b9f1c79289a1f79f2.pdf
    • https://static.usrfiles.com/ugd/a1fb72_48c65fe9e68b4bc0bbee8b8c714dd03c.pdf
    • https://static.usrfiles.com/ugd/70c1f8_e1ba96b3f105487b86d96f580ab52ffa.pdf
    • https://static.usrfiles.com/ugd/d3758e_818ff55ae16a4ddd92e33dd523c5bce9.pdf
    • https://static.usrfiles.com/ugd/90423f_0c9d64cf2150421781026c361c36181b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbca8c6e26074564ae006176727621da.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ee06d60f0284a798a6b926a51b6b185.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_64f54123c1e846edb98d7c92823223d5.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_5fc5946dcbf2400eab683779eac5cb28.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_17e4e0e09942425d96130276006d47f8.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_off00006c3f.bin
2b74f4ccd840e7f6844381e7c8dda5fc469dff62ecbf933fdb4bb2718ea1adf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3F 5116 bytes
font_01_sfnt_off00007dc6.bin
9243c602f1d2c1bf9bb35e8ede262935f98f857cabf40872e553604263814e55
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC6 10380 bytes