Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbdc01ad56fcaea…

MALICIOUS

PDF

35.7 KB Created: 2020-08-30 03:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c54cda2e9369aaa32b20109d734a3024 SHA-1: 4c08bb377d28da910ebdcfbc67a46aeb66e9929d SHA-256: 4dbdc01ad56fcaeaa42467c553d43468580e47abe5657e73d3eac6137fb8384a
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=ithu+njangalude+lokam+full+movie+dow'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on 'static.usrfiles.com'. The presence of a low-severity heuristic for a 'download button' lure suggests a social engineering attempt to trick the user into clicking the malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • 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=ithu+njangalude+lokam+full+movie+dow
    • https://static.usrfiles.com/ugd/b8c837_99b8d2701dec48bc942afa41628ccfdb.pdf
    • https://static.usrfiles.com/ugd/1a89c8_db71e8dc0e564e27a873bb212bb35450.pdf
    • https://static.usrfiles.com/ugd/b8c837_9861b9e5a22748e091115c8e140b1ca8.pdf
    • https://static.usrfiles.com/ugd/d01287_d850887487bc4327bdda9650374f4789.pdf
    • https://static.usrfiles.com/ugd/b8c837_65823cc4e8fc42bdb755d0bc994de157.pdf
    • https://static.usrfiles.com/ugd/55cc32_bc4aa12384a44d43a25f33ada29e303e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b61eece07ac84e12a16fc3fc155c8555.pdf
    • https://static.usrfiles.com/ugd/e42ee3_1dc4c6d801d14c33ac43282af7c8ec6e.pdf
    • https://static.usrfiles.com/ugd/97368a_2f78db12aab64d44b56243af041a8872.pdf
    • https://static.usrfiles.com/ugd/409ca8_4601255c21d54aa6b03a9a6818cc4b30.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d6f124867a9477ca7ee8bef31057f2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdf838f6053b4991886d3a1a2d6d2eaf.pdf
    • https://static.usrfiles.com/ugd/accd1f_fa79cbde36d841f887dae217ea6f6c62.pdf
    • https://static.usrfiles.com/ugd/f63f29_ddddef9928c647f48e025a083288ca29.pdf
    • https://static.usrfiles.com/ugd/409ca8_7837e894a4a947478374107735d52303.pdf
    • https://static.usrfiles.com/ugd/93c935_22cdeffeb18f40b79758b52779320ac8.pdf
    • https://static.usrfiles.com/ugd/8acad3_99a63de978964ed98d561bfe2e6cc257.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_off00004bb8.bin
72377aa97b67099ef0caf11d591b7e43e99f5a9590e5f6cdf94e152bef083ff5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB8 5276 bytes
font_01_sfnt_off00005da2.bin
e0b52a9d8bf23fe75c95ef9777f9a494053f6b42b81d767e7873448e7748ddb2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA2 11300 bytes