Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a00564c0f683ac5…

MALICIOUS

PDF

40.4 KB Created: 2020-08-29 05:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b2ec00f89281b4870469011e55d805 SHA-1: 037f0e3d8e80bab35be0545f92921f765660fddf SHA-256: 1a00564c0f683ac59a78765393a921a3504b58278fdcd5bbc6d503f81bb849a7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of these links, ttraff.com, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, suggesting a lure to trick users into visiting malicious sites, potentially for phishing or malware distribution.

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=shrek+1+pelicula+completa
    • https://static.usrfiles.com/ugd/b8c837_931d0a0c3bc14781aecbc1dd32e2fcaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_87867f904f92416a971679d2d6c552c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d063b16b638444591983e4b14169fff.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d5abccfc9204656b8b2e684fdb2f274.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd8ad63ecae84ffc85b9a3f23ffe319e.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb993aec78354c05bc22b84878ffdd64.pdf
    • https://static.usrfiles.com/ugd/b8c837_805e221dfd6a40e4951b39cd64c7af27.pdf
    • https://static.usrfiles.com/ugd/b8c837_aeba14b6879c43c8a61d852a8f1d1ae3.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb6fe8f978d04fdf9afd989318c2a438.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c29e3d0697846adb9f06de7e5baf2bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c24c944a9cb046c1acfeb53a213222cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_f14da6fe51c5423a8707e5a9054c9234.pdf
    • https://static.usrfiles.com/ugd/b8c837_0430d59fc6b84d73877ca041e394734c.pdf
    • https://static.usrfiles.com/ugd/b8c837_76517ad3aae0491997d8781ec65862e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_716b483145c944f1824c43be34c6ec4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d32996d0bfbd46f9bb88b303c60f149d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9dd1f4941204249bc8796e2d77bc6a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b654f51e954338b4cbf57c9b712593.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_off00005336.bin
f51dc7c69fdcc1cfaefe982a5f87e428e80ac94a1f0613181c6c61baaca93bea
pdf-font-stream PDF embedded font (sfnt) at offset 0x5336 4988 bytes
font_01_sfnt_off0000642e.bin
91f645318b9e3cffa048c79a1f0a482a1043687380cdadad9ed9ee18e8df0af0
pdf-font-stream PDF embedded font (sfnt) at offset 0x642E 10160 bytes
font_02_sfnt_off000086bb.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x86BB 4324 bytes