Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b6f1f021621569…

MALICIOUS

PDF

36.9 KB Created: 2020-08-30 08:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92c365717d7d51c289c5e04994933793 SHA-1: 5d59a1702c0c2f0c2b34b888b0eca199fb5520aa SHA-256: 77b6f1f021621569fbfc848082eeba1dac1471b2d7b8735712ed8a238dec0c6d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=tame+impala+let+it+happen+piano+sheet'. The document body, though heavily obfuscated, appears to contain this URL and other benign-looking URLs hosted on static.usrfiles.com. The presence of a link farm heuristic further suggests a malicious intent to distribute links, likely for phishing or malware delivery.

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.club/wix?keyword=tame+impala+let+it+happen+piano+sheet
    • https://static.usrfiles.com/ugd/b8c837_664ecd4f30c34ff683ef4edb4a17c57b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d51f0409b5254051a863753429337874.pdf
    • https://static.usrfiles.com/ugd/96768c_543e64139fec4f318b7797313665be86.pdf
    • https://static.usrfiles.com/ugd/d43733_c6c7582a6a564cd7a5b2c257a9bfd91f.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee03ef394c254da0b594ee1e861c1ef6.pdf
    • https://static.usrfiles.com/ugd/8cbfce_1537ee2870b449dbab64493fdff9e3b2.pdf
    • https://static.usrfiles.com/ugd/097bd5_d0376edfda1041c6a699e64d0dae032e.pdf
    • https://static.usrfiles.com/ugd/f09a9d_fa50da5fe3d446908524664c4055fa17.pdf
    • https://static.usrfiles.com/ugd/b91566_713d0b03df38496094761159d4d68111.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/lajavaliwokupufodegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/tefonefimevojovuwa.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_off00004786.bin
0ddea30c342dc96180c38e46338e39102fdd56a851e3563fae2c507ef2803f32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4786 4912 bytes
font_01_sfnt_off00005819.bin
ceca1b591c4d0fe198844a9fe540b8d334a9d1ad7567cc90e6c5a6d23b580178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5819 14228 bytes

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