Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8124d16e69581f…

MALICIOUS

PDF

47.0 KB Created: 2020-08-12 19:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6c74172e3f115ba65a0b94602eceb75 SHA-1: 88e5cff2218fd18ff647d72eaf6563bcd77af962 SHA-256: ee8124d16e69581f207003d802ee2150f7538c5c16963d0253b0d8f34389af85
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to obscure the final malicious destination. The document body text and heuristics suggest a social engineering lure to trick users into downloading a file.

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=download+pdf+file+from+url+online
    • http://files.americasharvestcbd.com/uploads/1/3/1/3/131383255/0ac355f6f6c9.pdf
    • http://lomemuk.kippbiogeochemistry.com/uploads/1/3/2/7/132740873/679c245.pdf
    • http://files.springmorefarm.com/uploads/1/3/0/7/130775138/7480573.pdf
    • http://jotozera.allanimalclinichattiesburg.com/uploads/1/3/1/6/131606457/vikowuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/81121905524.pdf
    • https://cdn.shopify.com/s/files/1/0439/8641/9870/files/asma_unam.pdf
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/56208046298.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/lasuzuxogiket.pdf
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/manual_taller_suzuki_bandit_400.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/municipios_de_puertorico.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/mimamofoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/94414508292.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3491/0618/files/70016456056.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/puxozexowodasubaleraribe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/94540780288.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_off000064d3.bin
685349f9818c288d3b25e33b78c4f594f753898f1b62b6243d162c197d4ca774
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 5100 bytes
font_01_sfnt_off0000762d.bin
7a370716daf303aa5b46dd626e7eea6729af5787ae83ca86fc8a858aafc28367
pdf-font-stream PDF embedded font (sfnt) at offset 0x762D 10360 bytes
font_02_sfnt_off000099db.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e
pdf-font-stream PDF embedded font (sfnt) at offset 0x99DB 16092 bytes