Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25f61b89003050d…

MALICIOUS

PDF

33.8 KB Created: 2020-08-14 23:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2e41b16895655e7b9f3107d8c36c995 SHA-1: bba5179f2adfc90e19bb9e7ce1278ee9b38d90c4 SHA-256: e25f61b89003050d1741625837fbe16ada81351c77281f66d308d36b883d3c60
130 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a direct link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body contains text related to sheet music and a call-to-action phrase, reinforcing the lure.

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.com/pify?keyword=very+easy+piano+christmas+sheet+music+free
    • http://files.smyrnafoundation.com/uploads/1/3/1/1/131163613/ac256f1.pdf
    • http://files.accessyourhearing.com/uploads/1/3/1/8/131857284/c183d1b940ce600.pdf
    • http://feduva.amhuff.com/uploads/1/3/0/9/130969916/tezalo.pdf
    • http://norododom.rdpresets.com/uploads/1/3/1/4/131407406/xekenod_gasab.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/dunijazoxakuzibodexafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/89859250373.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/transplante_de_celulas_tronco_hematopoeticas.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/51970219901.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/holy_bible_kjv_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9266/3702/files/3893534999.pdf
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/one_piece_streaming_english_subbed.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/8598099714.pdf
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/nuvorujubuvisitiru.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/vewovixurezokexuwuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/77735118949.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/wesofe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/5788593743.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_off000048ca.bin
428e2753fa8bf19aef8c8c429e468bf388d8e5e52a783ff825c55512b8fcec9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x48CA 5288 bytes
font_01_sfnt_off00005aa8.bin
081794dd5a01d5ad57d06aff977592e61bfacc3887210671831c953c538b723d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 9204 bytes