Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e3acdbe3871929…

MALICIOUS

PDF

58.1 KB Created: 2020-08-31 23:49:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f60543324a175ab31eaffcfaa8f2f0f SHA-1: b9b68b3c234be5baf626eff95c436ea2e33302be SHA-256: f9e3acdbe3871929742bbc4dcbf66b72f246d645976316bf48ec2c4b1a004593
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used in conjunction with a lure related to Netflix. The document body, though heavily obfuscated, contains the same Netflix-related text and the malicious URL. The presence of numerous external PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

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.cc/pify?keyword=netflix+en+lukt+niet+meer
    • https://static.usrfiles.com/ugd/b8c837_cfa4bfd4d8014aec97212927136faeb3.pdf
    • https://static.usrfiles.com/ugd/b8c837_eba7bf65c2c84f02a6739c84ebca9f86.pdf
    • https://static.usrfiles.com/ugd/b8c837_189295f9b67f465890b07b2c896eb7bb.pdf
    • https://static.usrfiles.com/ugd/33ab24_dbe6d3b70b054be7b700d7f383c8390c.pdf
    • https://static.usrfiles.com/ugd/b8c837_396b74fddcfa4f3ea21613a5cf13104d.pdf
    • https://static.usrfiles.com/ugd/93c935_7ca731ef97224ed88ae7d6757c557091.pdf
    • https://static.usrfiles.com/ugd/b8c837_03fc07f525374df0bcae17c46697bc14.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f2fee6cbd634393875379cf7b6b5e53.pdf
    • https://static.usrfiles.com/ugd/99afdc_82e87a30c23442dda51451f5dc774991.pdf
    • https://static.usrfiles.com/ugd/3be3a7_ec543a4b4f674a78a1651ec64b77bc60.pdf
    • https://static.usrfiles.com/ugd/eed56f_cb45ee0b2d75452bb1d0793daef98cbb.pdf
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/29033244923.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/fedojoxujupovanekowabime.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_off0000a92b.bin
c09b697af3ea48731a0ea75dfe1d330f4a6cd3d88305f33a679326340600cbbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA92B 4628 bytes
font_01_sfnt_off0000b8e1.bin
8a1ba21d63b2cc84ec86d30c1807d99d091a344c9c050fabb3b351a23142cfc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E1 10132 bytes

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