Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e5d2325115c5f6…

MALICIOUS

PDF

39.0 KB Created: 2020-09-08 19:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485c6c6bb7318bcc73a8f72e7bf2c71c SHA-1: 27d94bf530138acc530239d2ab1c5fc39702adc3 SHA-256: 82e5d2325115c5f6ba2543b9255f7d7e309d573dfa4efc094d0b19afff4b7fe5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=numbers+1-+10+in+spanish+worksheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files. The document body, though heavily obfuscated, contains references to these URLs, suggesting a social engineering attempt to drive traffic 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.me/wix?keyword=numbers+1-+10+in+spanish+worksheet
    • https://static.usrfiles.com/ugd/bc84a3_cd4c458f614b410f88389c0f6f8e44c5.pdf
    • https://static.usrfiles.com/ugd/3be3a7_f1041ad4aa6b464488a5b47138c825a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_f607206a59424d43b1c4598ecc782dd2.pdf
    • https://static.usrfiles.com/ugd/4d6844_2598667e520645ecbcba9310ffb92583.pdf
    • https://static.usrfiles.com/ugd/34ec99_c62bfa4369f44b078d627e0f278f7fcd.pdf
    • https://static.usrfiles.com/ugd/b80405_175b790f66214649a57ea396751b2fcd.pdf
    • https://static.usrfiles.com/ugd/7a7fb1_7d5fa6089e584dbdbf7d48a091330ee2.pdf
    • https://static.usrfiles.com/ugd/856cea_bce0010bf3d544048a5942e48963b951.pdf
    • https://cdn.shopify.com/s/files/1/0472/3091/0629/files/15484097724.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/81394473877.pdf
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/hardest_math_problems_with_answers.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_off0000599a.bin
819fbe4f3818919a0dc565f60b1968041cf452f860b763d06010bfd9fff5651c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599A 5520 bytes
font_01_sfnt_off00006c4e.bin
27b086ccdb918a6ba66701e9ec34439b8631b6037a097581c8f2bed2deeccc06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4E 10192 bytes

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