Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff6d030359e5393…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 19:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd2c772a570c5c7b393c50c7f0394420 SHA-1: 4f015794310ca4588f137bfc79a7c11eeabf7f21 SHA-256: 3ff6d030359e5393e30b2d18fa214f361045f03c38a39f26ad9bae5467943f82
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document also functions as a link farm, pointing to numerous PDF files hosted on Shopify, likely for SEO manipulation or to host further malicious content. The presence of a call-to-action phrase further supports the lure. No scripts were extracted, but the primary malicious activity appears to be redirection via the embedded link.

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=transfer+excel+to+google+sheets
    • http://files.write-the-vision.com/uploads/1/3/2/8/132814182/9358429.pdf
    • http://files.sharkteamone.org/uploads/1/3/1/3/131380316/78eeeb7.pdf
    • http://files.franklywines.com/uploads/1/3/0/8/130814258/rufozoxibanujaz.pdf
    • http://lijino.catalinacastells.com/uploads/1/3/0/7/130775654/rezumujatagu_lasaxelexake_kafolabinigimiz_gedovaxizamobi.pdf
    • http://salaxof.harborimpactministries.com/uploads/1/3/1/0/131070374/7608331.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8233/files/61917475139.pdf
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/acls_updates_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/67761950170.pdf
    • https://cdn.shopify.com/s/files/1/0429/0628/8291/files/manual_woodworkers_weavers.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/76558566315.pdf
    • https://cdn.shopify.com/s/files/1/0439/8045/6094/files/crisis_in_the_built_environment.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/vanosinil.pdf
    • https://cdn.shopify.com/s/files/1/0433/8558/5820/files/bioassay_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/wuridesurefatal.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/rudakimavu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/32435612796.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/6535428098.pdf
    • https://cdn.shopify.com/s/files/1/0433/8866/6017/files/nikabiritakuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/nevurasamodiwu.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_off00006142.bin
9b4a80939fdb9915bd28cc4a9ff347a2cb7e577865554f45d9c3b6337d3797a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 5160 bytes
font_01_sfnt_off000072c6.bin
a2a9845cfe47b7bfbb570320242ad6597283c125a8d1e305ca48cb37ea8924ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C6 12816 bytes