Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5338424c8fda3b…

MALICIOUS

PDF

59.3 KB Created: 2020-07-28 13:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fd3dbf847fe7a840352ae21581a12fb SHA-1: cc32f8d17cfc5f15100fdba24d694d655e3ee1e5 SHA-256: 8f5338424c8fda3bcff2f22c47f488b12b5878cc1b2b64605aeffd26169e562e
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf. The primary malicious activity observed is the redirection to a malicious URL, likely intended to deliver a further payload or phish for credentials.

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.cc/pify?keyword=best+school+annual+day+dance+performance
    • http://files.pgeastteachandlearn.com/uploads/1/3/1/4/131483386/4796df20f.pdf
    • http://files.connections203.com/uploads/1/3/2/6/132682966/4537200.pdf
    • http://files.mcalpine30days.com/uploads/1/3/2/8/132814136/fesok-rawuvowasomunir-woxetowuma-dekaxetubonisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/7770754460.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/muxizataponedik.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/tarilanepukilunaferaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/lipiwedufojekenu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/78010037296.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/bugowazevutazivuvazofu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/69319037750.pdf
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/wirazidalotujujafemarawoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.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_off0000ab03.bin
f43210d8deb421812ea58693253a883ddfa8ebee940c5314810b37fe8a075401		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB03 5380 bytes
font_01_sfnt_off0000bd22.bin
cf339c44505e7255f643a7b629bc6f0c347ce982b2bcad8f88e89b17878b8332		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD22 10156 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.