Malicious PDF — malware analysis report

Static analysis result for SHA-256 208a865a5cd35011…

MALICIOUS

PDF

37.8 KB Created: 2020-08-02 10:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97c2afd0c87f8334645d5ed013969f2c SHA-1: ec9e1746c175d5c8961b7763e97eb33fb091acb5 SHA-256: 208a865a5cd350119be2559659a6db57425abea2066adad77dc001389396edea
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or redirection scheme. The primary malicious URL identified is https://ttraff.cc/pify?keyword=smough%2527+s+great+hammer. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious intent. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/pify?keyword=smough%2527+s+great+hammer
    • http://files.on-sitept.com/uploads/1/3/1/4/131407051/pijomamarara-dewoxiwijolaz-neribovadefar-lofumivid.pdf
    • http://files.permastoneinc.com/uploads/1/3/1/4/131413362/sumukepumu-bujujezok-kilonulosuwarof.pdf
    • http://files.daytonxa.org/uploads/1/3/2/7/132740892/razulibabozagini.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/82225552047.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/96367607105.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/webuxotetigibelegu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/jalefoxitaxutuvaju.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/notek.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/medeguzexigewa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/86992908606.pdf
    • https://cdn.shopify.com/s/files/1/0432/5251/4971/files/xomenoworowenivinoxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/71426928125.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/37996376693.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_off00005663.bin
2b6adf332abe2004a081bdf34b3da7cb1b206bcf5029e8e8a1be5470d2fa6c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5204 bytes
font_01_sfnt_off000067ed.bin
09563bce1439073242c8d00865fd00146e010ed6d50ac048dc4515c3c2c745d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67ED 10228 bytes

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