Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c4c0ba56999ca6…

MALICIOUS

PDF

49.5 KB Created: 2020-08-30 19:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8933fd4dea3d99e7e9b4650c016015aa SHA-1: 8051e2b8df1035ccedeb3695a78e69e1585cca9b SHA-256: 56c4c0ba56999ca65fb87788a612f3d57403fd6ae40c506491c3ab8c14cbea06
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=oniisama+e+manga+read'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, with 'https://static.usrfiles.com/ugd/b8c837_19264833cbd04ddc9aec8a20a8d52c93.pdf' being the first identified. The document body, though heavily obfuscated, contains references to the malicious URL and appears to be a lure related to manga content.

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/wix?keyword=oniisama+e+manga+read
    • https://static.usrfiles.com/ugd/b8c837_19264833cbd04ddc9aec8a20a8d52c93.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd518353262340a5935270e5658c08b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b66c7751e714042a13b12e666979b85.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1436/files/63615176719.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/74899336761.pdf
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/75524751680.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/fijigatozusovuduxaluk.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/pudakog.pdf
    • https://static.usrfiles.com/ugd/895bef_611546e3c5524866803cbe5abec40298.pdf
    • https://static.usrfiles.com/ugd/739437_19d1334d57ba4552abef5b0f0caeee11.pdf
    • https://static.usrfiles.com/ugd/b8c837_33b5473b48854912a814f3597e7a1539.pdf
    • https://static.usrfiles.com/ugd/b8c837_8295da48881c428cb93d8b78ba380479.pdf
    • https://static.usrfiles.com/ugd/e42ee3_d0b223d5421b4ee18f71909740973287.pdf
    • https://static.usrfiles.com/ugd/739437_72c74afad2594df69e93076284f9d622.pdf
    • https://static.usrfiles.com/ugd/33c377_030d290bf1da4260bca4362fbea39c52.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8421eadc225463fb3fe49d83e9c4130.pdf
    • https://static.usrfiles.com/ugd/43d598_7d88d0c0ebbe4e3bbe112dbb2de50ef3.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_off00006f7b.bin
590abb8d331d6a95efa7a9e384921ac34ef61f6b86ddff0a3321b1ebb14257f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7B 5140 bytes
font_01_sfnt_off000080d4.bin
3be9f6324f54703bde29a5d980a38f836510aab0ad8635e8a3219a9cacb56bf7
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 10120 bytes
font_02_sfnt_off0000a3c5.bin
93c68bbf271e895223f6c768439d1eb6c0b502875bc087daae942cc0c8b685a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C5 16172 bytes