Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71edc1d47651b7f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 15:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1d491787b708413a1f8cf8bd2a88b51 SHA-1: 467a4a60952f2f4a616ef398aefe90a2bcce42b2 SHA-256: c71edc1d47651b7fca86b95851f9534382d71fc3025c3ff97e3d7e59e2e3e85d
170 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, indicating an attempt to lure users to malicious sites. The document body also contains text suggesting a 'download' lure, and a heuristic indicates a lure to execute clipboard content in a shell. The primary malicious URL is ttraff.cc, which redirects to a Shopify URL containing a PDF. The document body itself is heavily obfuscated but contains the malicious URL and references to 'Age of Empires 3 free', likely a lure.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=binkw32.+dll+age+of+empires+3+free
    • https://cdn.shopify.com/s/files/1/0439/0102/6459/files/31988628908.pdf
    • https://cdn.shopify.com/s/files/1/0462/3535/3239/files/alain_systme_des_beaux_arts.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/4630922297.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/badminton_rules_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/4633/7693/files/wurebukezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/lafik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
    • https://cdn.shopify.com/s/files/1/0436/3167/3504/files/98140556178.pdf
    • https://static.usrfiles.com/ugd/67f5f7_6acd2c23f35e462b95847a212a628ae7.pdf
    • https://static.usrfiles.com/ugd/74a852_7bd78d7831c447dd847e15702869af83.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d37cacaac1b4d3b83e38fa871d2ed5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_19d6b2351b174b71a02d7582669cccff.pdf
    • https://static.usrfiles.com/ugd/b7ab08_88e80fcb738149f9992e7d5ecc54e581.pdf
    • https://static.usrfiles.com/ugd/e4ff69_d834fdc42ee841fa94a359d73b542a4c.pdf
    • https://static.usrfiles.com/ugd/a107db_dc14ebab5857483783a900f64a62836c.pdf
    • https://static.usrfiles.com/ugd/2f7815_03ecf507c06246358083a89eb5d729d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8bcff15cfa1c4370b1d950ab64693aab.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_off0000667a.bin
882888daad9d1283ae0d6f0da2939fca2f5f1c325d0705ea26ce01daa4f01174		 pdf-font-stream PDF embedded font (sfnt) at offset 0x667A 5896 bytes
font_01_sfnt_off00007a9e.bin
66447536869ce60b49292ae747ad34cd9ddf3c8a4f7ae14f9c64fae8e1911ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9E 10280 bytes

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