Malicious PDF — malware analysis report

Static analysis result for SHA-256 eefae85e444f8e58…

MALICIOUS

PDF

52.7 KB Created: 2020-08-09 03:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06774d96b71cecdfc9115900c45d57c2 SHA-1: d8a13939064665c00c68247585a2a08c7568a8d7 SHA-256: eefae85e444f8e5801623a89bf67194f362d11dcbd1b2833ecab7491e40764e3
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.cc/pify?keyword=ayodhya+kanda+slokas+in+telugu+pdf. The document body, though heavily obfuscated, contains this URL and other embedded links, suggesting a social engineering lure to download further content or visit a compromised site. The ML classifier also strongly indicated maliciousness.

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=ayodhya+kanda+slokas+in+telugu+pdf
    • http://files.h2healingtea.com/uploads/1/3/1/4/131411024/645ebc107089.pdf
    • http://files.upcivanuatu.com/uploads/1/3/1/0/131069899/bazumasesofune-xigabaxumofave.pdf
    • http://files.sabatinomangini.com/uploads/1/3/1/4/131438180/87fff37fef0ba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/paypal_donate_button.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/kexaleribefoxusoxum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0724/files/xugazikap.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/84769057545.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3621/files/disipijiwuxufupavetezovud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/statistical_inference_for_engineers_and_data_scientists.pdf
    • https://cdn.shopify.com/s/files/1/0428/6935/8758/files/fozumogiduvenawikumatepu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/74831765243.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055e7.bin
5ba4381de94e68947c41d13eedd400022af52a467dba10a07aedb8bb5c6192e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E7 5364 bytes
font_01_sfnt_off00006832.bin
1dcf34c77d4eeefea2f86ebfd9ee20c64d7edfb160433aa8d103a24e4dcb0d85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6832 26420 bytes
font_02_sfnt_off0000a3c6.bin
7f41a6bcc46a20409172f4aafb1f674b07b14cf4fc3db083be1a337e8df03606		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C6 9948 bytes

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