Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b0179fe4f93f9b…

MALICIOUS

PDF

53.6 KB Created: 2020-08-19 12:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d13bb2bb42cf7a65eb04d4a7d83b298 SHA-1: fe4979cc1faca79b03ee9d315f1940b236637787 SHA-256: 77b0179fe4f93f9bdf8a1601ec8f7f0a42c06573f99f4845ef7c7bbaafda1bb1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed for SEO manipulation. One of these links, 'https://ttraff.cc/pify?keyword=amman+songs+audio+free', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=amman+songs+audio+free
    • http://files.rumanhamdani.com/uploads/1/3/1/4/131438423/nipezakidex-mosekuxexu.pdf
    • http://files.raananahikers.com/uploads/1/3/1/4/131407067/dekejamewow-vawovipufib.pdf
    • http://files.mountainview.gasconline.net/uploads/1/3/1/4/131406149/10b794b2b4ce.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/wedepusesedaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8428/files/analog_and_digital_measuring_instruments.pdf
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/repawitapuwegorapod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/desumubepuve.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/boleva.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/89257589538.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/wafozowedukiliv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/kanedapa.pdf
    • https://cdn.shopify.com/s/files/1/0440/5159/5429/files/reproduo_angiospermas.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/nomeliramefamifejuwopoleg.pdf
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/84481070269.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/41156018367.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_off00008e74.bin
10cbe762deb8d5251baa323890bfe4b8780a791304ae130de48d41c6700f643d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E74 5184 bytes
font_01_sfnt_off00009ff5.bin
58acc3840a88f2a31a36ca6ab9fe4ccca2a1ac9c21d7eb272559557fffa655a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF5 13144 bytes

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