Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ed53daf0941cd7…

MALICIOUS

PDF

42.6 KB Created: 2020-08-29 02:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aefcc75af3d19d66986f78f86a0f677 SHA-1: eed726a3f335c431bab3dc2948b1e9d0a3860df6 SHA-256: 92ed53daf0941cd740d87f08cfac8a60764cf799e7dfad4e03cdbaa4609b40be
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One prominent URL, 'https://ttraff.com/wix?keyword=butterfly+bts+piano+mp3+download', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a coordinated effort to drive traffic to potentially harmful sites. The presence of a link farm and a malicious redirector indicates a probable phishing or malware distribution attempt.

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=butterfly+bts+piano+mp3+download
    • https://static.usrfiles.com/ugd/b8c837_ba65f5c89cff4197a23abaab6bfae0a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_22d89e09ffd047df98b25af2dc1b2302.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a70232a76194389b236cb1603ddb5c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8813a76683e41758b0793fc6c1a0021.pdf
    • https://static.usrfiles.com/ugd/b8c837_680cec348eef439dabd0a506550f8eb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_5acfa20dbf0a4622be5e3a79c0f3c604.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3382f939c5541f4b788e3a5ec4b68cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfe6f83d8cfe46b081cb485e4d9b1321.pdf
    • https://cdn.shopify.com/s/files/1/0471/0085/4422/files/how_to_record_csgo_clips.pdf
    • https://cdn.shopify.com/s/files/1/0459/9824/3999/files/jujejaluvita.pdf
    • https://cdn.shopify.com/s/files/1/0462/7215/1703/files/90657594679.pdf
    • https://cdn.shopify.com/s/files/1/0433/2430/9659/files/complicaes_da_anestesia_geral.pdf
    • https://cdn.shopify.com/s/files/1/0454/7356/2790/files/ejercicios_radicales_1_bachillerato.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_off000049ae.bin
d7f58c01d61f0279752078b667f5a3163ef60bf41dfd3a22037a9662adb0c246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE 5320 bytes
font_01_sfnt_off00005be1.bin
bc4ccf6fd4668c0a95f7fef892723e59932f7c3473f9f2b95c7e9690d6a58f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE1 5736 bytes
font_02_sfnt_off00006f5c.bin
0e9133d74d7e9a3d23d97d7d3cf89cf5b4e108fc6962560766572aeaabce6f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5C 14240 bytes

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