Malicious PDF — malware analysis report

Static analysis result for SHA-256 962e93e67c6e5e64…

MALICIOUS

PDF

67.7 KB Created: 2020-08-20 22:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db649f621ac1d75d6a8408d834ed1995 SHA-1: d4943042be11ded88925f4bed847f025b0859870 SHA-256: 962e93e67c6e5e641618ff7e861eeb9964a56b755753a3f87bcbf13e5d67e538
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, specifically using an invoice/payment lure. The document body, though heavily obfuscated, contains text related to 'salary voucher format doc' and a URL pointing to 'ttraff.ru'. This URL is identified as a malicious redirector, likely leading to further malicious content or phishing pages.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=salary+voucher+format+doc
    • http://files.creativationevents.com/uploads/1/3/2/6/132680986/waxadevepi.pdf
    • http://files.glaquaponics.com/uploads/1/3/1/1/131164075/mosevelobiwub_xuwobadalo.pdf
    • http://soxeduvam.dasilvavideo.com/uploads/1/3/1/8/131871509/sosugo-gusasa-gekimuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/29785576195.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/laxagabuvorituxarubopik.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/curriculum_vitae_formato_da_compilare.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/20417416497.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/pixeliremuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/3472/1959/files/adelante_uno.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/atheist_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/40147631664.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_off0000c335.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC335 2828 bytes
font_01_sfnt_off0000cd30.bin
c0da8b08d30a4c6d093ae539b4a4bd5bf58175f8b024514b94271737faa1f4c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD30 5348 bytes
font_02_sfnt_off0000df40.bin
f5249775bd02d28d0e70ea369e4625e23b752791235518aeb4f6f3e78c794d84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF40 10132 bytes

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