Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca14e100e226736…

MALICIOUS

PDF

39.5 KB Created: 2020-08-08 01:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c3652e6046d6a924795475f68b92235 SHA-1: f6589fe624f65c369b1610575c22fd5ca397b502 SHA-256: 3ca14e100e226736652e0476c376a12e66a3b6fe25922e94bf19cc14055829ea
128 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, masquerading as a 'free printable budget worksheet'. One of these links, https://ttraff.cc/pify?keyword=free+printable+budget+worksheet+pdf, points to a known malicious redirector. The presence of a 'download button' heuristic further supports the lure mechanism. The file's primary purpose appears to be directing users to malicious infrastructure through deceptive content.

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=free+printable+budget+worksheet+pdf
    • http://files.martin-land.com/uploads/1/3/1/6/131636584/dubazuwowiwek.pdf
    • http://files.colacotwayartstrail.com/uploads/1/3/2/6/132681378/jefamixizo-zejexelelovezid.pdf
    • http://files.plumb-bing.co.nz/uploads/1/3/1/3/131398504/tajusirifexepiwinojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/ralupiziduvatiten.pdf
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/zifeporujodixuzizelupixef.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/zibodelekipol.pdf
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/gexetutexodejibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/importancia_da_analise_swot.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/tezeziwolipasiza.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/neumonia_signos_y_sintomas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/bigupusaluroxakulewib.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/25779725219.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/32804083999.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/gipamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/barusorugavadef.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_off00005d6b.bin
fb1eb4ac5706c955407a339ca26791730c0f2ffea8f1028568ad652146eddb3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6B 5556 bytes
font_01_sfnt_off00007055.bin
6936f4f79e507c12fed58f517a153c8af587c36e0315a88e356942a80b6527ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x7055 9632 bytes