Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec00f7571292f79b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-04 13:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b504b507ea7d942b72daf33d63359edd SHA-1: 67960973da2847916f40f9524632e5c0e882fb20 SHA-256: ec00f7571292f79b5e1678d34ab51785c3b7dacaff31f740496a6471343bd991
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=sejarah+kota+bekasi+pdf. While no scripts were extracted, the sheer volume of links and the critical heuristic firings strongly indicate malicious intent.

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.com/pify?keyword=sejarah+kota+bekasi+pdf
    • http://miwot.foresterscience.com/uploads/1/3/1/0/131070993/devos.pdf
    • http://gojexo.hornsbyptsa.org/uploads/1/3/1/6/131606260/zezevu.pdf
    • http://files.mkalust.com/uploads/1/3/0/9/130969097/6245009.pdf
    • http://files.santos-cua.com/uploads/1/3/0/9/130970003/rapapagixopef_robudatawi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/colorear_unicornio.pdf
    • https://cdn.shopify.com/s/files/1/0433/5989/5717/files/31055817747.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/dell_demention_2350.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/zebuso.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4189/files/66385582010.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/tibibudirobopuxudazijito.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/batewufetiruzuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/jevigapulojulululida.pdf
    • https://cdn.shopify.com/s/files/1/0440/6873/3078/files/denaselinetutirefifo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/gogegafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/towemixagonujevadutuxox.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_off000074ce.bin
223c833556cdc98e26e922eebb87082ece34816ffa9ebf7365dbaf8935c9afe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CE 5480 bytes
font_01_sfnt_off00008765.bin
fdecee22d521bc16ceb270461a35f65ee8348ba7e63e4ddfa9db607e650f98b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8765 10420 bytes

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