Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36c213c0cc849a9…

MALICIOUS

PDF

59.5 KB Created: 2020-09-01 17:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 475762c3d538e93876d25f0cdd4335dd SHA-1: 81d98056efd6bd1c8b4627d1d3052bc825dff2b3 SHA-256: c36c213c0cc849a96df4850967b8ef5534483e3cc5ff205e43408cb2c220f137
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=vs+code+c+formatting+options'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a phishing attempt to redirect users to potentially 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.me/wix?keyword=vs+code+c+formatting+options
    • https://static.usrfiles.com/ugd/b8c837_b830d38f1a4344fc956e4ca7ad36a12a.pdf
    • https://static.usrfiles.com/ugd/0a052f_951bca833f2a4b9ea8d629ac793f9351.pdf
    • https://static.usrfiles.com/ugd/defdb4_3a22f89fdd1449ea8ded45cf1afd70b6.pdf
    • https://static.usrfiles.com/ugd/2f7815_a4674d2add154938b7775f3dfe990712.pdf
    • https://static.usrfiles.com/ugd/30e015_6c9ca84aaa0043159f02f00d93df30af.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/79041557175.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/vetegebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/vorepufeloteduzotawidoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/xakurobap.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4727/files/64070277274.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/gluckstein_sheets_warranty.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d7e.bin
ac64b8af80fcca1e0e594fba8a0f1e66fdecb42d42f059741c9e9f76428d751e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 2880 bytes
font_01_sfnt_off000077bd.bin
25a50a9fe7680a156f43f45657487568f1aadd354b9519501da3965d1c7e5ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BD 5196 bytes
font_02_sfnt_off0000893f.bin
0f740872c9ba99ba2808e86ca1aa710947acf25eef927d3004a187dd3557d740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893F 2092 bytes
font_03_sfnt_off000092e5.bin
db405611ffb320dba026a978117e065a4625f819b963305c6c74502893c16148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E5 12456 bytes
font_04_sfnt_off0000bb8c.bin
a7186c3bd9e1f5af89263f264dd1a2d5151968bde3d19f1520b154909a61d4f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8C 16524 bytes
font_05_sfnt_off0000d1b8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B8 4324 bytes

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