Malicious PDF — malware analysis report

Static analysis result for SHA-256 da073c75b8d38f50…

MALICIOUS

PDF

44.5 KB Created: 2020-07-31 17:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78fac915588ab9bfd3f968c734e807e4 SHA-1: a3d4dccd81f6f97503316b90a0e9419b5d8ee121 SHA-256: da073c75b8d38f50cad59ca73f2ae4dfc23714121996dacf276be9004aab8738
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the document is designed to lead users to malicious infrastructure under the guise of providing test questions.

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.ru/pify?keyword=auto+mechanic+test+questions+pdf
    • http://files.circleoffriendspreschool1.com/uploads/1/3/0/7/130738553/datexumemawulo.pdf
    • http://files.rossimachineryservices.com/uploads/1/3/0/7/130739949/7812311.pdf
    • http://files.radovansebesta.com/uploads/1/3/1/3/131398141/725495a374.pdf
    • http://files.artistsfusion.com/uploads/1/3/1/4/131409709/cbfbc.pdf
    • https://cdn.shopify.com/s/files/1/0439/3032/1051/files/bakinufimupixijovogijob.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2214/files/fozikekivamom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/bibabixerudafexugon.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/vexozowawov.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/dutatigaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7612/4821/files/26123006561.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/zunajevelosunaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/matawupuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/zuzub.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/benipawotolufojonujorotu.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_off00006528.bin
80312175868fd64812c2ccbbb2a8d2e59d04d59d60cf223081f12f76403d85ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5264 bytes
font_01_sfnt_off000076ec.bin
e78a52777dcf36f564c450f1014ef0a3f0a5c25a662bc40d4d0ba9172f0d21e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76EC 9332 bytes
font_02_sfnt_off000096cb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CB 4324 bytes

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