Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0755cc1f8583f05…

MALICIOUS

PDF

50.9 KB Created: 2020-08-30 09:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c2350ab792f60082ace71e1346ee2d5 SHA-1: ff82c61e45988ed3a93f6f6efd90b35cfa733976 SHA-256: d0755cc1f8583f0564854163a83bf7b861ce7678eac3662a1a441be96b4b477d
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.001 PowerShell T1553.005 Security Software Installation

The PDF file contains a link farm and a malicious redirector URL, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=vector+magic+portable+1.15' and a reference to 'Vector magic portable 1.15', likely a lure. Crucially, a heuristic firing indicates the document instructs users to disable security software, a strong indicator of malicious intent. No scripts were extracted, but the combination of a malicious redirector and security bypass instructions points to a downloader or phishing lure.

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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wix?keyword=vector+magic+portable+1.15
    • http://urlin.us/1trifHow
    • https://static.usrfiles.com/ugd/b8c837_15efeb427726487784f231101b4e8c43.pdf
    • https://static.usrfiles.com/ugd/b8c837_69eacfa2fd24478ab8177c7c07243d6e.pdf
    • https://static.usrfiles.com/ugd/dc98cc_8cf4a5925cdc47ebb8a9bd37bcf80e00.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4070b95493a40ac9285ce3d84f40896.pdf
    • https://static.usrfiles.com/ugd/b8c837_63f4e57ffacc416aaa89c111360fe830.pdf
    • https://static.usrfiles.com/ugd/b8c837_195e06c7da894170a91d6081932901e9.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_2465961f8ad148dcac17716e24fd2d2b.pdf
    • https://static.usrfiles.com/ugd/b4609a_d298dff2d24b4fc5976f34e9d3c34969.pdf
    • https://static.usrfiles.com/ugd/b8c837_33ace708e8524835b9e9b6d815723726.pdf
    • https://static.usrfiles.com/ugd/b13fd1_cdcf1b2dc38b453ba3b6abc0176c4e02.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6a9e8a912694c90b04776d45c4eebdb.pdf
    • https://static.usrfiles.com/ugd/8b9728_b6db695059454022bbd2ca36ec7005f0.pdf
    • https://static.usrfiles.com/ugd/10b11f_17a209bf0e3a45bd9b0fb0015ed09a0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_af64b28627cd4bec8224d9ecbae77549.pdf
    • https://static.usrfiles.com/ugd/3826db_4563481d39334928a438cbe2c2afa321.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065da.bin
3af6d05b0de17d4201b848fbf23ca32decc6c3d717d08f246de2d7e1ee0e2443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 5388 bytes
font_01_sfnt_off0000781a.bin
490584defb5190a4521301385c43a6812338ec0c85e5d025173306b45f2329bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 16364 bytes
font_02_sfnt_off0000a5c2.bin
fad97c6fa223f68c4e5052e507cfc22d51f1688727123ca74b4f13277db52bde		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C2 17192 bytes

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