Malicious PDF — malware analysis report

Static analysis result for SHA-256 93163f769829c87a…

MALICIOUS

PDF

42.0 KB Created: 2020-08-07 08:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07bbca25d805a0ea059c62fbdabec11f SHA-1: e87a55d866898f9fc13303839787009311135369 SHA-256: 93163f769829c87ab1e0bc773f7aaa342747e86eb9462c1b716fced37675c255
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=mastering+bitcoin+andreas+pdf`. Additionally, the document body explicitly requests sensitive recovery information, such as private keys or backup codes. This combination suggests a phishing or scam attempt aimed at stealing user credentials or financial assets.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=mastering+bitcoin+andreas+pdf
    • http://files.pricebrothersauction.com/uploads/1/3/0/7/130740011/292e68e99fa0.pdf
    • http://files.drmeladypreece.com/uploads/1/3/0/8/130813645/gamekafefim-lawutobolowo-kujowisopize.pdf
    • http://files.techtoberfestoc.com/uploads/1/3/2/6/132681556/9747449.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/82210938211.pdf
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/24822609324.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6209/files/44579064744.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/dosebezapu.pdf
    • https://cdn.shopify.com/s/files/1/0447/6325/0839/files/sales_skills_training.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/kanuxanudebolomejofesepof.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/10675051960.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/fisheries_and_aquaculture.pdf
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/repemufof.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1463/files/31775377884.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_off000064c5.bin
ffcfb5f95d4bd3bd1a39a52d124671b1c360f3a262953421606883605177c997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C5 5436 bytes
font_01_sfnt_off0000775a.bin
6a2e69bd2f87f764d816eb5b129cea594b432109ff8fa8f28424c3b1b4aff509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 10668 bytes

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