Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2211584989aa61…

MALICIOUS

PDF

35.2 KB Created: 2020-08-29 22:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad577eee444b788e92929679dcf7758a SHA-1: 73e31c6b0ad49b945907f96bcbfe2ffbd5691773 SHA-256: 1f2211584989aa6152cb27be75a992e0e6a31e23e79d976bdf4270e65d684923
150 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 ttraff.com. This URL is presented within the document body, disguised as a search query for 'Frozen 2 all is found piano sheet music pdf'. The file also exhibits characteristics of a link farm, with numerous external links, many of which are benign Shopify URLs, likely used to mask the malicious redirector. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=frozen+2+all+is+found+piano+sheet+music+pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/technical_english_2_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/7270/0057/files/70891555731.pdf
    • https://cdn.shopify.com/s/files/1/0448/3887/9392/files/463252261.pdf
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/toastmasters_speech_evaluation_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/rosazivujupone.pdf
    • https://static.usrfiles.com/ugd/c5d40f_5145c3d3fb92469c94680692d32f077e.pdf
    • https://static.usrfiles.com/ugd/b8c837_89dbc283b57b4d5cac7e2b0aff9cfc67.pdf
    • https://static.usrfiles.com/ugd/b8c837_96fd505f73ce4c528ffd0cc23ef824c5.pdf
    • https://static.usrfiles.com/ugd/79e0dc_f676d1a5a68a4101afb93ee8a1d3f36d.pdf
    • https://static.usrfiles.com/ugd/b8c837_165550fb41434e53b50c5e88d018a5fe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/jupativojowamipunagijig.pdf
    • https://cdn.shopify.com/s/files/1/0439/3503/9656/files/3605303014.pdf
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/sevisujugow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/77600129159.pdf
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/40621000736.pdf
    • https://static.usrfiles.com/ugd/b8c837_83c94c35d1d04a19bc32a8329cb88f04.pdf
    • https://static.usrfiles.com/ugd/b8c837_258a96fa30bd41219800a6511a5ec1bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_79f7511c81a6460597ceabda20b33dc2.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_off00004b02.bin
6bb80a4da05a3e7d77fb1fd30d501429471ce22e27e1f8c7981aaa6de35d35d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B02 5532 bytes
font_01_sfnt_off00005dae.bin
3e1b3ab063bc6a05614e6a2cb85da2d2e393ff41a638b745ab8f2cd660f8d6a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAE 9956 bytes