Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceddb97c7620bb87…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 00:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b447d12000a9d0488f430017e97de51e SHA-1: a08b4c957c97b97f0c8481b8d118e05ccb54b9a6 SHA-256: ceddb97c7620bb878ba41676c1c8236e9d869c9795fbd725c766eeaa83358957
150 Risk Score

Malware Insights

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

This PDF document contains a lure related to an 'Oppo f1s android version upgrade' and embeds numerous links. One of these links, 'https://ttraff.ru/pify?keyword=oppo+f1s+android+version+upgrade', is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest it is designed to lead the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.ru/pify?keyword=oppo+f1s+android+version+upgrade
    • http://files.ideamonterreypark.com/uploads/1/3/0/9/130969241/wosul_jigezabu_godafuwubu_lunujetakos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/4202397107.pdf
    • https://cdn.shopify.com/s/files/1/0436/1597/7630/files/bisaguzawegires.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/41004681920.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/birmingham_tram_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/nedemizimonaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/61518420712.pdf
    • https://cdn.shopify.com/s/files/1/0428/8879/0179/files/19145999826.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/59190282964.pdf
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/fuwivusiwudidejekubir.pdf
    • https://cdn.shopify.com/s/files/1/0440/8259/3957/files/83555145928.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_off000064e0.bin
08d611b60d37c988f8e0bc83d55af90d67e21c37de34c2777933f539b06f9a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E0 5316 bytes
font_01_sfnt_off0000770e.bin
9419c3d4f3fea0ce37dee621a3b71179e2266fc8aa2d7f59b71265b2236fbd71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770E 10660 bytes

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