Malicious PDF — malware analysis report

Static analysis result for SHA-256 961589d014b77f1e…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 13:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f5e2738cbe399e2c6f0051ec736a6aa SHA-1: 2f84738c83f488ed0a2560e801b64dd633c1a359 SHA-256: 961589d014b77f1eba3bacf22bcc7edca9082dd312268c8abb142ca2ef8dd201
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or social engineering attempt to direct users to malicious infrastructure.

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=rugrats+crecidos+online
    • https://static.usrfiles.com/ugd/3826db_76991ba2436a4a028a90166553227f55.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d8d25558c324058b98cf572a12700a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbafac0e7d174d3388260a72d41f770f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c00d0d0797c4653b174009bcae3e607.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/25542876153.pdf
    • https://cdn.shopify.com/s/files/1/0449/1545/8215/files/union_budget_2020_19_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/gibafugewajagifujiruta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42386580717.pdf
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/zekase.pdf
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/wefisavakefoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/silugimomapovitofav.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/29285932576.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/sublime_text_multiple_cursors.pdf
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/racquetball_rules.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_off0000615f.bin
3dcf5962f640e7953fe6d3e8b340502077662ba343b4d6317f2bc9463d419be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 5112 bytes
font_01_sfnt_off000072d2.bin
5fbbec30c1c9bec40477c535ddc6d255a06305a56b67d37a82b64d31249d19d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 10464 bytes

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