Malicious PDF — malware analysis report

Static analysis result for SHA-256 def138fa39f50e26…

MALICIOUS

PDF

41.7 KB Created: 2020-08-30 14:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29bdb2bfb3c3cac145849028a85aa2b3 SHA-1: c33f4fcef91d106930cfd642e5b37bb482497ac4 SHA-256: def138fa39f50e266bf1e5ee63957d4be2a3a18742ad228a4c31e8fc5c26918f
130 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. The presence of a "download" call-to-action further supports a malicious intent to trick users into clicking the link.

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=primo+water+cooler+troubleshooting
    • https://static.usrfiles.com/ugd/822ecd_cea59da48ea84f019e87a9d0457ce661.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a0647911b0d47e5a14ad61988378200.pdf
    • https://static.usrfiles.com/ugd/a86d68_f4f4c084fdca4bad9c191c36fd532b9f.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_8dba8678c69a46e38f65c5e5ae2abd71.pdf
    • https://static.usrfiles.com/ugd/b8c837_497dc99242c144dbba8b873bab2c1a97.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d014fd798c8423b829ce8d80b9d38f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c24447d30b8c47828084a64ed750a70b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a644d38499694b9c92782ebd48abfb49.pdf
    • https://static.usrfiles.com/ugd/b8c837_d160ce30a08f43b8a5703c44dd9143de.pdf
    • https://static.usrfiles.com/ugd/a58b01_26d3f788cacf41fc866863da163bef45.pdf
    • https://static.usrfiles.com/ugd/b7ab08_ec34b2a577a142ecae300545d4c0b6ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_778fabad083c45bcac7329df819bf7d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_35695968fed741b7abf77f63de221c93.pdf
    • https://static.usrfiles.com/ugd/3f4b99_e6b9fa56d3ab47168bc6b8beb5ca7893.pdf
    • https://static.usrfiles.com/ugd/b8c837_b52de928a3dc467795c003702e94c2be.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_off00006566.bin
00f7fb68c82509e32e61225e51cd899033ff1503f9f547b8469c5c59272c958a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6566 5448 bytes
font_01_sfnt_off000077ca.bin
12d9219e346d552f3708b0db4cb5984cd1f3b176ba8d2fef2c859be5f2679900		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 9992 bytes

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