Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abffcc6359fded8…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 00:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91199dfd4159b70139b01f595d633222 SHA-1: 155ce2c1e75f931951014bab068edb93c57cd27e SHA-256: 7abffcc6359fded8ed42c89947c8baf19eb0197e539228d2ff753dc45293cbba
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify, designed to appear as legitimate content. One specific link, https://ttraff.ru/wix?keyword=hp+m254dw+review, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a lure to a malicious site under the guise of a printer review.

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=hp+m254dw+review
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/34882700716.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/century_21_accounting_workbook_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/49760004098.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/gloaming_crossword_answer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/87939073689.pdf
    • https://cdn.shopify.com/s/files/1/0447/7501/4566/files/californication_fingerstyle_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/76758907819.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/bozozizexezo.pdf
    • https://static.usrfiles.com/ugd/b8c837_548c94c05dee4178b9bbfeab9398e19c.pdf
    • https://static.usrfiles.com/ugd/1b8612_96fbdeec490c4742a6040d2b558ee1a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_131b139a46394c5aaed18cd7a6a23c7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_90377477b0904e5ababda945b3dd6dce.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d92bc9f4daa4d878bcc42df02d6ec80.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_off00005f30.bin
622c6a30a24078e5a4bdda57c7caea083fe050d54fa9e23cb0f6338fa8987b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 4636 bytes
font_01_sfnt_off00006efd.bin
2537debfbef4fd03e098a67b61816ae68cbb6ef55d81728799bb6d98d2a9a448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 11028 bytes
font_02_sfnt_off000093e0.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93E0 4324 bytes

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