Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d904c34c50648d…

MALICIOUS

PDF

41.7 KB Created: 2020-09-04 01:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48c0afbd0e49285966eb7085622f5848 SHA-1: bf92581710bd45b4e049a71eaebc57e3611e6161 SHA-256: d5d904c34c50648d83182f78ce7b14e91a39935075daed84705da89fa85a65e2
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, suggests a lure related to resume templates. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware download site. The file also exhibits characteristics of a link farm, with many links pointing to static.usrfiles.com, though these appear benign.

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=ucla+career+center+resume+template
    • https://static.usrfiles.com/ugd/21b4a7_44fafef8b2c24f56a2a9fcf0ecf906a6.pdf
    • https://static.usrfiles.com/ugd/739437_4f058aca10d74d26ab3d39bce87be9e7.pdf
    • https://static.usrfiles.com/ugd/d13e1f_15cb0983e08740c4a7293b1fc0bbb483.pdf
    • https://static.usrfiles.com/ugd/16a96a_957a53be03b0463ea66edfa2532987b6.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_cc728b6ce2c54b94b08d0466bc271168.pdf
    • https://static.usrfiles.com/ugd/affb4a_9c87083a63044920837bd374f800e042.pdf
    • https://static.usrfiles.com/ugd/65b209_61ac1676d468402dbbc1342896c0c1e2.pdf
    • https://static.usrfiles.com/ugd/48d9a1_55c1361c32ce463d8cf5ea0a5398d153.pdf
    • https://static.usrfiles.com/ugd/0047a4_bc2d1e256fc543d0b2540e4eda0e0731.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_2cf831ec58694979976b4232b758420e.pdf
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/really_small_girl_porn.pdf
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/vuwupumenibumido.pdf
    • https://cdn.shopify.com/s/files/1/0450/1327/0692/files/verolejiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/9424/4516/files/92192274433.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_off000065a2.bin
2c763a2e657ff77f41a609fb3ad2c68878caaaf048506132bdf2e721beb74703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A2 5068 bytes
font_01_sfnt_off000076cc.bin
c1aa917f0f28c0afe264498f0d2e79531a548b216f5c35f62315d5f5462cfb94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 10352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.