Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c1ce9e731d94f8…

MALICIOUS

PDF

55.3 KB Created: 2020-08-30 23:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 336ef9e7c78a65bf458ed3cc04362885 SHA-1: 09cde78b529ba23eaff032a7440baa89e39f6bd3 SHA-256: 97c1ce9e731d94f8dc2b975a0468bc7c72cb4aa462221e8bbf1aa496fbe212d3
128 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.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'cdn.shopify.com', one of which is the initial redirector. The document body, though heavily obfuscated, contains the same keyword-rich URL, suggesting a lure to entice clicks. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext.

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.
  • 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
  • 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/wix?keyword=beginner+3d+printer
    • https://cdn.shopify.com/s/files/1/0437/8604/3541/files/leziluvusujexinamuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/29252904769.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/4308755523.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/tagazurevuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/govur.pdf
    • https://cdn.shopify.com/s/files/1/0457/5638/3396/files/final_fantasy_anthology_official_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1911/6449/files/magop.pdf
    • https://cdn.shopify.com/s/files/1/0462/2925/8389/files/49315770872.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/nopetebop.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/difference_between_analog_and_digital_circuits.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/niduzisul.pdf
    • https://cdn.shopify.com/s/files/1/0465/4995/8814/files/descargar_adobe_air_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/catia_v6_assembly_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/0177/2192/files/web_texter_plus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/da_form_1380.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/xoriludejusejisekuditula.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/kadebopagoraraxezavisijuz.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_off00009020.bin
da61a1ba1a6842e80483b84b3a7ea8b3bf113018a84a4c899291f8bcf2bd1b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9020 4920 bytes
font_01_sfnt_off0000a0e6.bin
79777cc3bf14d7c36a1b02e3a6eec7776755bc8dd20168ec0a9c245fb2c46eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E6 2212 bytes
font_02_sfnt_off0000ab01.bin
162465b3f970a6659eaeb1d3b31b9d23d618005b1f8813ca51abff8de346526e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB01 10760 bytes

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