Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc90dc26b8ed3c92…

MALICIOUS

PDF

42.7 KB Created: 2020-08-29 09:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cbb6aa00a621e6924272c0ee4bf71fa SHA-1: a9717f70555ed66d3671b69ef7e05a0a57c70708 SHA-256: fc90dc26b8ed3c9222d69efc5eab43c535cedcaad96c1b6bf1aaa1d97589660e
136 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 'ttraff.cc'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains text related to downloading a game and the malicious redirector URL, reinforcing the lure. The presence of a visual download button lure and urgency language further supports the phishing attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=world+hardest+game+download+free
    • https://cdn.shopify.com/s/files/1/0433/5153/9866/files/goluwewovupifugogaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50833930904.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenipuwewof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/fractal_geometry_of_nature_mandelbrot.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/96931730596.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/mofob.pdf
    • https://cdn.shopify.com/s/files/1/0434/8398/8125/files/daz_loader_mydigitallife.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/67474761884.pdf
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/lession_of_passion_night_with_veroni.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/30319719197.pdf
    • https://cdn.shopify.com/s/files/1/0432/7306/0520/files/55742177681.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/vorafetovelupolubupoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/xikizufijojex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/megepisiwanewu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/my_grammar_lab_advanced_c1_c2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/ralubixejekibabizanof.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/wideri.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_off000065d0.bin
dcbed3e49bd89c9fe58a848df9ec62b5eb37229f48428e230cba9a9165ba93b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D0 5428 bytes
font_01_sfnt_off0000783d.bin
311218043f659f12d1e7ed344c6113366b51c12f164e25eb4a8b2b72970a10de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783D 11176 bytes

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