Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e9ee5e580815dc…

MALICIOUS

PDF

48.1 KB Created: 2020-08-13 23:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97d1e48b191e7781f29d87d35bc77c13 SHA-1: 7356dc7f638bf788dc33c819ea195111b08f685e SHA-256: 51e9ee5e580815dc70ecf4b16fb97ba6405ca234ad1aebdf037c2cb87c5bd2e4
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 link farm. The embedded URL points to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the sheer volume of links indicates a strong intent to redirect users to potentially harmful sites.

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=i+love+you+meme+template
    • http://sidedime.tarltoncabinetshop.com/uploads/1/3/0/8/130874633/795268.pdf
    • http://files.thecalmscribe.ca/uploads/1/3/2/7/132740805/2267fc7134.pdf
    • http://files.henryhomesconsulting.com/uploads/1/3/1/4/131453870/5099743.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/gisunekopupa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/kubolalulovew.pdf
    • https://cdn.shopify.com/s/files/1/0429/0494/4807/files/28656253595.pdf
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/wiluloxemaxixevuzuxarir.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/neratexekodaro.pdf
    • https://cdn.shopify.com/s/files/1/0436/9190/1081/files/lolajamagil.pdf
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/calendar_2020_festival_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95181885481.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xubeke.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/afcat_2020_exam_syllabus.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_off000064f1.bin
405f559fb6d17fed0b85c220df136241f89f5aa8606818f969a53f6e17a2fcd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F1 4792 bytes
font_01_sfnt_off00007539.bin
c83a56ecb0678d9c7424f2be6ab491c6d8578a39385758a870dd0f08465c74dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7539 10288 bytes
font_02_sfnt_off0000988f.bin
dcc8abf7f2a9c164dbd80f46ee5567a405e7d5370bd1f20d032a64218ab98650		 pdf-font-stream PDF embedded font (sfnt) at offset 0x988F 17900 bytes

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