Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2678a3014b66e50…

MALICIOUS

PDF

51.9 KB Created: 2020-09-11 05:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba5bfda26f1c1a7e11190e6990a822de SHA-1: 85e78d2fdc4204b850d58651490f032a4e835119 SHA-256: b2678a3014b66e50034fd8d7ef60740b6ed566af5d72aed4c1e432484d8fa929
150 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'candy crush saga pc game free' and embeds multiple links. One of these links, 'https://ttraff.me/wix?keyword=candy+crush+saga+pc+game+free', is identified as a malicious redirector. The presence of numerous links, including one pointing to a known malicious redirector, strongly suggests a phishing or social engineering attack aimed at directing users to malicious content. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/wix?keyword=candy+crush+saga+pc+game+free
    • http://files.renewyourminddaily.com/uploads/1/3/1/3/131380128/8965241.pdf
    • https://static.usrfiles.com/ugd/19ce5d_9a804803137c40af97adf747a02f21bd.pdf
    • https://static.usrfiles.com/ugd/a2d007_02b44e6bcc0748a0bbc5b519acdd19c7.pdf
    • https://static.usrfiles.com/ugd/f390e7_69b4c2af871c439cae18b0c13a899e74.pdf
    • https://static.usrfiles.com/ugd/97634b_4d8598105d4a44659269b02cbb67217a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/13752553525.pdf
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/10684489584.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/37446464316.pdf
    • https://cdn.shopify.com/s/files/1/0441/4291/9832/files/favipesod.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/58100483954.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/local_anesthetics_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.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_off00008ad6.bin
258d8f66452c76d65e03a60621544ef3ed1a40aeb9cc6703e9a56314ce12f2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD6 5544 bytes
font_01_sfnt_off00009d94.bin
2a94bd34f2504b03cc7650c82d015af0d0c143cd3ea1895195c57b5d4155d3ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D94 10900 bytes

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