Malicious PDF — malware analysis report

Static analysis result for SHA-256 290df17402b3dd46…

MALICIOUS

PDF

44.1 KB Created: 2020-07-16 16:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77266395e0bdf5ff239de0b6b01656ac SHA-1: 3417da7f7f9e3dc3840affbc3ed40aead312c9db SHA-256: 290df17402b3dd46ee551fd5460bb017b5234c1e91f79d5dbd7dcf9afe971a9e
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, a technique often used in SEO link farms to manipulate search engine rankings or to redirect users to malicious sites. One of the embedded links, 'https://ttraff.cc/wb?keyword=classroom%20rules%20and%20expectations%20pdf', is identified as a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'classroom rules and expectations'.

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.cc/wb?keyword=classroom%20rules%20and%20expectations%20pdf
    • http://files.slowgrindfever.com/uploads/1/3/0/7/130740363/tokimoz.pdf
    • http://files.mspledgersclass.com/uploads/1/3/1/4/131406104/8c90282.pdf
    • http://files.balkanhistory.org/uploads/1/3/1/3/131384679/5414953.pdf
    • http://files.mspledgersclass.co
    • https://bokisutedex.files.wordpress.com/2020/07/jevile.pdf
    • https://vodupabaneze.files.wordpress.com/2020/07/50250481342.pdf
    • https://xutosazibovi.files.wordpress.com/2020/07/87304041065.pdf
    • https://migeleki.files.wordpress.com/2020/07/31329875628.pdf
    • https://datunexa.files.wordpress.com/2020/06/fapawurotijaladevib.pdf
    • https://naxopovo.files.wordpress.com/2020/07/ruviguxuzelapumuremuxe.pdf
    • https://wiwamadujiw.files.wordpress.com/2020/07/pubej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/46424550507.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/favenagufefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/13345106857.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/kurajafesebejigagu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pijajaza.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_off00007016.bin
9c4e9d28a91ab6271cc6b592d2580bbee71e1fcac009497f044f2bff37390a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 5272 bytes
font_01_sfnt_off000081ef.bin
b621ace7efafe12c34923703c026014f1ce215f8990a9a4389f7c47f5cdfc8f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81EF 9744 bytes

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