Malicious PDF — malware analysis report

Static analysis result for SHA-256 4201d509fc390bd8…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 02:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eda8b9a6b916947327ba677a5822145 SHA-1: 171c6094a472964fd0aa2508631b6cdb64f6d424 SHA-256: 4201d509fc390bd8456406221d8e51f7571739828cd13b3f10ce5a6e1a19dc04
168 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=max+dancing+with+the+stars'. Additionally, it exhibits a link farm pattern with numerous external PDF links, including one to 'https://static.usrfiles.com/ugd/b8c837_127b7f64e5fe454c97d8858f93b75350.pdf'. The presence of a 'Password-protected archive handoff' lure suggests the document is designed to trick users into downloading and decrypting a malicious payload.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=max+dancing+with+the+stars
    • https://static.usrfiles.com/ugd/b8c837_127b7f64e5fe454c97d8858f93b75350.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6071401020040e89cf7e0f04e877af2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7ab7b7970844811aeeabe7b5dd323dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3faba924c5144b0899bbc2da6b149b6.pdf
    • https://static.usrfiles.com/ugd/61b8bf_ffd8e06205e4465bb4536f0b16c906c0.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_cf00bdad937646ebb74a934cc927eed0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac947309aaed413a945ce7c4bb124e90.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/makukavijulogedufeti.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9501/files/89388930644.pdf
    • https://static.usrfiles.com/ugd/277b62_48e1e6cc65ac4dcd8c969b3a10bd411d.pdf
    • https://static.usrfiles.com/ugd/097bd5_1d75d1c2e4a24f5e8d1b0f8589e2a7c9.pdf
    • https://static.usrfiles.com/ugd/0df15e_f6c4902122f64f7ca21fd2c9bdf2d7bd.pdf
    • https://static.usrfiles.com/ugd/c1de29_2005b26d5d194b239dcbd2d36b373228.pdf
    • https://static.usrfiles.com/ugd/b8c837_f87842bb954040feacd7262a1cad6ae1.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_off00005c74.bin
ede9f2f1d8f708c07f046fed0c4e7d466b18757b872172b026672522fc25a271
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C74 5332 bytes
font_01_sfnt_off00006ea4.bin
ec511b902d391b05908a91fcb10fde95165336e0f63448cb32ed3ab6b323edce
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA4 15376 bytes
font_02_sfnt_off00009df6.bin
6add63bac907d63f0a7ac04059215f9ee7040c66fb68ea629763e4236336bb0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF6 16144 bytes